# HG changeset patch
# User veltr
# Date 1365008194 -7200
# Node ID 1fa074d646627714000febb84072b77b363ddb2f
# Parent  4aec3f00ea876aa3d67672333033b17de7d4cb19
Added Renkan to Cinecard

diff -r 4aec3f00ea87 -r 1fa074d64662 integ/css/iri.css
--- a/integ/css/iri.css	Wed Apr 03 16:19:25 2013 +0200
+++ b/integ/css/iri.css	Wed Apr 03 18:56:34 2013 +0200
@@ -36,11 +36,16 @@
 .renkan .wrap-top{width: 100%; height: 56px; background-color:rgba(0,0,0,.4);}
 .renkan .wrap-top h2{ font-size: 30px; padding-left: 18px; line-height: 56px; display: inline-block;}
 
+.Rk-ZoomButtons,
 .zoom{width: 30px; margin: 18px 0 0 16px;-webkit-box-shadow: 0px 2px 1px rgba(0, 0, 0, 0.1);-moz-box-shadow:    0px 2px 1px rgba(0, 0, 0, 0.1);box-shadow:         0px 2px 1px rgba(0, 0, 0, 0.1);}
 .zoom li{padding: 0;width: 30px; height: 30px;}
+.Rk-ZoomIn, .Rk-ZoomOut,
 .zoom a{margin: 0;width: 30px; height: 30px; display: inline-block; background: url(../img/zoom.png) center top no-repeat;}
+.Rk-ZoomIn:hover, .Rk-ZoomOut:hover,
 .zoom a:hover{background-color: #191919;}
+.Rk-ZoomIn,
 .zoom .in{background-color: #929292; background-position: center 8px;}
+.Rk-ZoomOut,
 .zoom .out{background-color: #fff; background-position: center -22px;}
 
 .renkan .actions{width: 194px; float: right; margin: 12px 12px 0 0;}
@@ -62,4 +67,8 @@
 }
 a.send:hover{
 	background: #1899e1;background: -moz-linear-gradient(top,  #1899e1 0%, #126ae3 100%);background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#1899e1), color-stop(100%,#126ae3));background: -webkit-linear-gradient(top,  #1899e1 0%,#126ae3 100%);background: -o-linear-gradient(top,  #1899e1 0%,#126ae3 100%);background: -ms-linear-gradient(top,  #1899e1 0%,#126ae3 100%);background: linear-gradient(to bottom,  #1899e1 0%,#126ae3 100%);filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#1899e1', endColorstr='#126ae3',GradientType=0 );
-}
\ No newline at end of file
+}
+
+.edit-cinecard {
+	position: relative;
+}
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/iri-creation-cinecard.html
--- a/integ/iri-creation-cinecard.html	Wed Apr 03 16:19:25 2013 +0200
+++ b/integ/iri-creation-cinecard.html	Wed Apr 03 18:56:34 2013 +0200
@@ -14,6 +14,8 @@
 <link rel="stylesheet" href="css/reset.css" />
 <link rel="stylesheet" href="css/styles.css" />
 <link rel="stylesheet" href="css/iri.css" />
+<!-- Renkan CSS -->
+<link rel="stylesheet" href="renkan/css/renkan.css" />
 <!-- Custom scrollbars CSS -->
 <link href="css/jquery.mCustomScrollbar.css" rel="stylesheet" type="text/css" />
 <script src="js/libs/modernizr-2.5.3.min.js"></script>
@@ -139,23 +141,10 @@
 					</ul>
 				</div>
 
-				<ul class="zoom">
-					<li><a class="in" href="#"></a></li>
-					<li><a class="out" href="#"></a></li>
-				</ul>
+				<div class="edit-cinecard" id="cinecard"></div>
+				
 			</div>
-
-
-
-
-
-
-
-
-
-
-
-
+			
 		</section>
 		<!-- /central -->
 	</div>
@@ -187,5 +176,34 @@
 <script src="js/script.js"></script>
 <script src="js/iri.js"></script>	
 
+<!-- RENKAN -->
+
+<script src="renkan/lib/jquery.mousewheel.min.js"></script>
+<script src="renkan/lib/underscore-min.js"></script>
+<script src="renkan/lib/backbone.js"></script>
+<script src="renkan/lib/backbone-relational.js"></script>
+<script src="renkan/lib/paper.js"></script>
+<script src="renkan/js/main.js"></script>
+<script src="renkan/js/defaults.js"></script>
+<script src="renkan/js/models.js"></script>
+<script src="renkan/js/i18n.js"></script>
+<script src="renkan/js/paper-renderer.js"></script>
+<script>
+	$(function() {
+        _renkan = new Rkns.Renkan({
+            user_id: "u-iri",
+            language: "fr",
+            container: "cinecard",
+            show_bins: false,
+            show_top_bar: false,
+            show_minimap: false,
+            show_node_circles: false,
+            clip_node_images: false,
+            default_user_color: "#808080",
+            static_url: "renkan/"
+        });
+	});
+</script>
+
 </body>
 </html>
\ No newline at end of file
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/css/renkan.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/integ/renkan/css/renkan.css	Wed Apr 03 18:56:34 2013 +0200
@@ -0,0 +1,159 @@
+
+.Rk-Render {
+    position: absolute; left: 0; top: 0; right: 0; bottom: 0;
+}
+
+/* Canvas */
+
+.Rk-Canvas {
+    position: absolute; left: 0; top: 0; right: 0; bottom: 0; z-index: 1;
+}
+
+/* Editors */
+
+.Rk-Editor {
+    position: absolute; left: 0; top: 0; right: 0; z-index: 2; color: #000000;
+}
+
+.Rk-Notifications {
+    position: absolute; right: 15px; top: 15px; width: 200px;
+    padding: 10px; border-radius: 8px; display: none;
+    color: #ffffff; font-size: 13px; text-align: center; font-weight: bold;
+    background: rgba(20,20,20,.7);
+    background: -moz-linear-gradient(top, rgba(40,40,40,.7) 20%, rgba(0,0,0,.7) 80%);
+    background: -webkit-linear-gradient(top, rgba(40,40,40,.7) 20%, rgba(0,0,0,.7) 80%);
+    background: -ms-linear-gradient(top, rgba(40,40,40,.7) 20%, rgba(0,0,0,.7) 80%);
+    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#202020', endColorstr='#000000',GradientType=0 );
+}
+
+.Rk-CloseX {
+    float: right; cursor: pointer;
+}
+
+.Rk-Editor h2 {
+    font-size: 16px; font-weight: bold;
+}
+
+.Rk-Editor p, .Rk-Editor-p {
+    margin: 5px 0; font-size: 12px; clear: both;
+}
+
+.Rk-Editor-Label {
+    float: left; width: 80px;
+}
+
+a.Rk-Edit-Goto {
+    display: block; float: right; width: 18px; height: 17px; margin: 1px 0; border: none; background: url(../img/goto.png);
+}
+
+.Rk-Edit-Title, .Rk-Edit-URI, .Rk-Edit-Image, .Rk-Edit-Image-File, .Rk-Edit-Vocabulary {
+    font-size: 12px; width: 250px;
+}
+
+.Rk-Edit-URI {
+    font-size: 12px; width: 230px;
+}
+
+.Rk-Edit-ImgPreview {
+    border: 1px solid #666; margin: 5px auto; display: block;
+    max-width: 253px !important; max-height: 100px !important;
+}
+
+.Rk-Editor textarea {
+    width: 250px; height: 120px; resize: none;
+}
+
+.Rk-UserColor {
+    display: inline-block; width: 12px; height: 12px; border: 1px solid #666666; margin: -2px 2px;
+}
+
+.Rk-Edit-Color {
+    display: inline-block; width: 10px; height: 10px; border: 2px solid #333333; margin: -2px 2px;
+}
+
+.Rk-Edit-ColorTip {
+    display: block; width: 3px; height: 3px; background: #fff; margin: 7px 0 0 7px; cursor: pointer;
+}
+
+.Rk-Edit-ColorPicker-Wrapper {
+    display: inline-block; position: relative;
+}
+
+.Rk-Edit-ColorPicker {
+    position: absolute; top: -2px; left: 15px; width: 96px; height: 96px; border: 1px solid #CCCCCC;
+    padding: 5px 4px 4px 5px; background: #ffffff; border-radius: 5px; display: none;
+}
+
+.Rk-Edit-ColorPicker-Text {
+    color: #303080; font-weight: bold;
+}
+
+.Rk-Edit-ColorPicker li {
+    float: left; width: 11px; height: 11px; margin: 0 1px 1px 0; cursor: pointer;
+}
+
+.Rk-Edit-Size-Up, .Rk-Edit-Size-Down {
+	font-size: 13px; font-weight: bold; padding: 0 4px; background: #ffffff; color: #000000; border: 1px solid #cccccc;
+	text-decoration: none;
+}
+
+.Rk-Edit-Size-Up:hover, .Rk-Edit-Size-Down:hover {
+	background: #666666;
+}
+
+.Rk-Edit-Size-Value {
+	display: inline-block;
+    padding: 0 5px;
+    text-align: center;
+    width: 20px;
+}
+
+.Rk-Edit-Vocabulary-Class {
+	color: #999999; font-style: italic; font-weight: bold;
+}
+
+.Rk-Edit-Vocabulary-Property {
+	padding-left: 20px;
+}
+
+.Rk-Edit-Direction {
+	border: 1px solid #666; padding: 3px 5px; line-height: 20px; border-radius: 3px; background: #f0f0f0; cursor: pointer;
+}
+
+.Rk-Edit-Direction:hover {
+	background: #c0c0c0;
+}
+
+.Rk-Display-Title a {
+	text-decoration: none; color: #000000;
+}
+
+.Rk-Display-Title a:hover {
+	text-decoration: underline;
+}
+
+.Rk-Display-URI {
+	font-style: italic;
+}
+
+.Rk-Fold-Bins {
+	position: absolute; top: 5px; width: 12px; text-align: center; font-size: 16px; cursor: pointer;
+	line-height: 16px; padding: 4px; color: #ffffff; background: #666666; border-radius: 0 6px 6px 0;
+	font-weight: bold;
+}
+
+.Rk-Fold-Bins:hover {
+	background: #333333;
+}
+
+.Rk-ZoomButtons {
+    position: absolute;
+}
+
+.Rk-ZoomIn, .Rk-ZoomOut {
+	display: block;
+}
+
+.Rk-Clear {
+    clear: both;
+}
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/img/edit.png
Binary file integ/renkan/img/edit.png has changed
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/img/goto.png
Binary file integ/renkan/img/goto.png has changed
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/img/image-placeholder.png
Binary file integ/renkan/img/image-placeholder.png has changed
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/img/link.png
Binary file integ/renkan/img/link.png has changed
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/img/remove.png
Binary file integ/renkan/img/remove.png has changed
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/img/zoombuttons.png
Binary file integ/renkan/img/zoombuttons.png has changed
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/js/defaults.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/integ/renkan/js/defaults.js	Wed Apr 03 18:56:34 2013 +0200
@@ -0,0 +1,86 @@
+Rkns.defaults = {
+	
+    language: (navigator.language || navigator.userLanguage || "en"),
+    	/* GUI Language */
+    container: "renkan",
+    	/* GUI Container DOM element ID */
+    search: [],
+    	/* List of Search Engines */
+   	bins: [],
+   		/* List of Bins */
+	static_url: "",
+		/* URL for static resources */
+	show_bins: true,
+		/* Show bins in left column */
+	properties: [],
+		/* Semantic properties for edges */
+	read_only: false,
+		/* Allows editing of renkan without changing the rest of the GUI. Can be switched on/off on the fly to block/enable editing */
+	editor_mode: true,
+		/* Switch for Publish/Edit GUI. If editor_mode is false, read_only will be true.  */
+    snapshot_mode: false,
+    	/* In snapshot mode, clicking on the floppy will save a snapshot. Otherwise, it will show the connection status */
+	show_top_bar: true,
+		/* Show the top bar, (title, buttons, users) */
+	
+	/* MINI-MAP OPTIONS */
+	
+    show_minimap: true,
+    	/* Show a small map at the bottom right */
+    minimap_width: 160,
+    minimap_height: 120,
+    minimap_background_color: "#ffffff",
+    minimap_border_color: "#cccccc",
+    minimap_highlight_color: "#ffff00",
+    minimap_highlight_weight: 5,
+    
+    /* EDGE/NODE COMMON OPTIONS */
+   	
+   	buttons_background: "#202020",
+   	buttons_label_color: "#c000c0",
+   	buttons_label_font_size: 9,
+	
+	/* NODE DISPLAY OPTIONS */
+	
+    show_node_circles: true,
+    	/* Show circles for nodes */
+	clip_node_images: true,
+		/* Constraint node images to circles */
+	node_stroke_width: 2,
+	selected_node_stroke_width: 4,
+	node_fill_color: "#ffffff",
+	highlighted_node_fill_color: "#ffff00",
+	node_label_color: "#000000",
+	node_label_font_size: 10,
+	node_label_font: 'Helvetica, Arial, sans-serif',
+	node_label_distance: 5,
+		/* Vertical distance between node and label */
+	node_label_max_length: 40,
+		/* Maximum displayed text length */
+	
+	/* EDGE DISPLAY OPTIONS */
+	
+	edge_stroke_width: 2,
+	selected_edge_stroke_width: 4,
+	edge_label_color: "#000000",
+	edge_label_font_size: 9,
+	edge_label_font: 'Helvetica, Arial, sans-serif',
+	edge_label_distance: -3,
+	edge_label_max_length: 20,
+    edge_arrow_length: 18,
+    edge_arrow_width: 12,
+    edge_gap_in_bundles: 12,
+    
+    /* CONTEXTUAL DISPLAY (TOOLTIP OR EDITOR) OPTIONS */
+   
+   	tooltip_width: 275,
+   	tooltip_padding: 10,
+   	tooltip_margin: 15,
+    tooltip_arrow_length : 20,
+    tooltip_arrow_width : 40,
+   	tooltip_top_color: "#f0f0f0",
+   	tooltip_bottom_color: "#d0d0d0",
+   	tooltip_border_color: "#808080",
+   	tooltip_border_width: 1
+	
+}
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/js/i18n.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/integ/renkan/js/i18n.js	Wed Apr 03 18:56:34 2013 +0200
@@ -0,0 +1,74 @@
+Rkns.i18n = {
+    fr: {
+        "Edit Node": "Édition d’un nœud",
+        "Edit Edge": "Édition d’un lien",
+        "Title:": "Titre :",
+        "URI:": "URI :",
+        "Description:": "Description :",
+        "From:": "De :",
+        "To:": "Vers :",
+        "Image": "Image",
+        "Image URL:": "URL d'Image",
+        "Choose Image File:": "Choisir un fichier image",
+        "Full Screen": "Mode plein écran",
+        "Add Node": "Ajouter un nœud",
+        "Add Edge": "Ajouter un lien",
+        "Archive Project": "Archiver le projet",
+        "Auto-save enabled": "Enregistrement automatique activé",
+        "Connection lost": "Connexion perdue",
+        "Created by:": "Créé par :",
+        "Zoom In": "Agrandir l’échelle",
+        "Zoom Out": "Rapetisser l’échelle",
+        "Edit": "Éditer",
+        "Remove": "Supprimer",
+        "Link to another node": "Créer un lien",
+        "Click on the background canvas to add a node": "Cliquer sur le fond du graphe pour rajouter un nœud",
+        "Click on a first node to start the edge": "Cliquer sur un premier nœud pour commencer le lien",
+        "Click on a second node to complete the edge": "Cliquer sur un second nœud pour terminer le lien",
+        "Twitter": "Twitter",
+        "Wikipedia": "Wikipédia",
+        "Wikipedia in ": "Wikipédia en ",
+        "French": "Français",
+        "English": "Anglais",
+        "Japanese": "Japonais",
+        "Untitled project": "Projet sans titre",
+        "Lignes de Temps": "Lignes de Temps",
+        "Loading, please wait": "Chargement en cours, merci de patienter",
+        "Edge color:": "Couleur :",
+        "Node color:": "Couleur :",
+        "Choose color": "Choisir une couleur",
+        "Change edge direction": "Changer le sens du lien",
+        "Do you really wish to remove node ": "Voulez-vous réellement supprimer le nœud ",
+        "Do you really wish to remove edge ": "Voulez-vous réellement supprimer le lien ",
+        "This file is not an image": "Ce fichier n'est pas une image",
+        "Image size must be under ": "L'image doit peser moins de ",
+        "Size:": "Taille :",
+        "KB": "ko",
+        "Choose from vocabulary:": "Choisir dans un vocabulaire :",
+        "SKOS Documentation properties": "SKOS: Propriétés documentaires",
+        "has note": "a pour note",
+        "has example": "a pour exemple",
+        "has definition": "a pour définition",
+        "SKOS Semantic relations": "SKOS: Relations sémantiques",
+        "has broader": "a pour concept plus large",
+        "has narrower": "a pour concept plus étroit",
+        "has related": "a pour concept apparenté",
+        "Dublin Core Metadata": "Métadonnées Dublin Core",
+        "has contributor": "a pour contributeur",
+        "covers": "couvre",
+        "created by": "créé par",
+        "has date": "a pour date",
+        "published by": "édité par",
+        "has source": "a pour source",
+        "has subject": "a pour sujet",
+        "Dragged resource": "Ressource glisée-déposée",
+        "Search the Web": "Rechercher en ligne",
+        "Search in Bins": "Rechercher dans les chutiers",
+        "Close bin": "Fermer le chutier",
+        "Refresh bin": "Rafraîchir le chutier",
+        "(untitled)": "(sans titre)",
+        "Select contents:": "Sélectionner des contenus :",
+        "Drag items from this website, drop them in Renkan": "Glissez des éléments de ce site web vers Renkan",
+        "Drag this button to your bookmark bar. When on a third-party website, click it to enable drag-and-drop from the website to Renkan.": "Glissez ce bouton vers votre barre de favoris. Ensuite, depuis un site tiers, cliquez dessus pour activer 'Drag-to-Add' puis glissez des éléments de ce site vers Renkan"
+    }
+}
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/js/main.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/integ/renkan/js/main.js	Wed Apr 03 18:56:34 2013 +0200
@@ -0,0 +1,304 @@
+/* 
+ *  Copyright 2012 Institut de recherche et d'innovation 
+ *  contributor(s) : Yves-Marie Haussonne, Raphael Velt, Samuel Huron
+ *   
+ *  contact@iri.centrepompidou.fr
+ *  http://www.iri.centrepompidou.fr 
+ *   
+ *  This software is a computer program whose purpose is to show and add annotations on a video .
+ *  This software is governed by the CeCILL-C license under French law and
+ *  abiding by the rules of distribution of free software. You can  use, 
+ *  modify and/ or redistribute the software under the terms of the CeCILL-C
+ *  license as circulated by CEA, CNRS and INRIA at the following URL
+ *  "http://www.cecill.info". 
+ *  
+ *  The fact that you are presently reading this means that you have had
+ *  knowledge of the CeCILL-C license and that you accept its terms.
+*/
+
+/* Declaring the Renkan Namespace Rkns and Default values */
+
+if (typeof Rkns !== "object") {
+    Rkns = {}
+}
+
+Rkns.$ = jQuery;
+
+Rkns._ = _;
+
+Rkns.VERSION = '0.2';
+
+Rkns.pickerColors = ["#8f1919", "#a80000", "#d82626", "#ff0000", "#e87c7c", "#ff6565", "#f7d3d3", "#fecccc",
+    "#8f5419", "#a85400", "#d87f26", "#ff7f00", "#e8b27c", "#ffb265", "#f7e5d3", "#fee5cc",
+    "#8f8f19", "#a8a800", "#d8d826", "#feff00", "#e8e87c", "#feff65", "#f7f7d3", "#fefecc",
+    "#198f19", "#00a800", "#26d826", "#00ff00", "#7ce87c", "#65ff65", "#d3f7d3", "#ccfecc",
+    "#198f8f", "#00a8a8", "#26d8d8", "#00feff", "#7ce8e8", "#65feff", "#d3f7f7", "#ccfefe",
+    "#19198f", "#0000a8", "#2626d8", "#0000ff", "#7c7ce8", "#6565ff", "#d3d3f7", "#ccccfe",
+    "#8f198f", "#a800a8", "#d826d8", "#ff00fe", "#e87ce8", "#ff65fe", "#f7d3f7", "#feccfe",
+    "#000000", "#242424", "#484848", "#6d6d6d", "#919191", "#b6b6b6", "#dadada", "#ffffff"];
+
+Rkns._BaseBin = function(_renkan, _opts) {
+    if (typeof _renkan !== "undefined") {
+        this.renkan = _renkan;
+        this.renkan.$.find(".Rk-Bin-Main").hide();
+        this.$ = Rkns.$('<li>')
+            .addClass("Rk-Bin")
+            .appendTo(_renkan.$.find(".Rk-Bin-List"));
+        this.title_icon_$ = Rkns.$('<span>')
+            .addClass("Rk-Bin-Title-Icon")
+            .appendTo(this.$);
+            
+        var _this = this;
+        
+        Rkns.$('<a>')
+            .attr({
+            	href: "#",
+            	title: _renkan.translate("Close bin")
+        	})
+            .addClass("Rk-Bin-Close")
+            .html('&times;')
+            .appendTo(this.$)
+            .click(function() {
+                _this.destroy();
+                if (!_renkan.$.find(".Rk-Bin-Main:visible").length) {
+                	_renkan.$.find(".Rk-Bin-Main:last").slideDown();
+                }
+                _renkan.resizeBins();
+                return false;
+            });
+        Rkns.$('<a>')
+            .attr({
+            	href: "#",
+            	title: _renkan.translate("Refresh bin")
+        	})
+            .addClass("Rk-Bin-Refresh")
+            .appendTo(this.$)
+            .click(function() {
+                _this.refresh();
+                return false;
+            });
+        this.count_$ = Rkns.$('<div>')
+            .addClass("Rk-Bin-Count")
+            .appendTo(this.$);
+        this.title_$ = Rkns.$('<h2>')
+            .addClass("Rk-Bin-Title")
+            .appendTo(this.$);
+        this.main_$ = Rkns.$('<div>')
+            .addClass("Rk-Bin-Main")
+            .appendTo(this.$)
+            .html('<h4 class="Rk-Bin-Loading">' + _renkan.translate("Loading, please wait") + '</h4>');
+        this.title_$.html(_opts.title || '(new bin)');
+        this.renkan.resizeBins();
+        
+        if (_opts.auto_refresh) {
+            window.setInterval(function() {
+                _this.refresh();
+            },_opts.auto_refresh)
+        }
+    }
+}
+
+Rkns._BaseBin.prototype.destroy = function() {
+    this.$.detach();
+    this.renkan.resizeBins();
+}
+
+/* Point of entry */
+
+Rkns.Renkan = function(_opts) {
+    var _this = this;
+    
+    this.options = _.defaults(_opts, Rkns.defaults);
+        
+	Rkns._(this.options.property_files).each(function(f) {
+		Rkns.$.getJSON(f, function(data) {
+			_this.options.properties = _this.options.properties.concat(data);
+		});
+	});
+    
+    this.read_only = this.options.read_only || !this.options.editor_mode;
+
+    this.project = new Rkns.Models.Project();
+    
+    this.translate = function(_text) {
+    	return (Rkns.i18n[_this.options.language] || Rkns.i18n[_this.options.language.substr(0,2)] || {})[_text] || _text;
+    }
+    if (typeof this.options.user_id !== "undefined") {
+        this.current_user = this.options.user_id;
+    }
+    this.$ = Rkns.$("#" + this.options.container);
+    this.$
+        .addClass("Rk-Main")
+        .html(this.template(this));
+    this.renderer = new Rkns.Renderer.Scene(this);
+    this.tabs = [];
+    this.search_engines = [];
+
+    this.current_user_list = new Rkns.Models.UsersList();
+    
+    if (!this.options.search.length) {
+        this.$.find(".Rk-Web-Search-Form").detach();
+    } else {
+        var _tmpl = Rkns._.template('<li class="<%= className %>" data-key="<%= key %>"><%= title %></li>'),
+            _select = this.$.find(".Rk-Search-List"),
+            _input = this.$.find(".Rk-Web-Search-Input")
+            _form = this.$.find(".Rk-Web-Search-Form");
+        Rkns._(this.options.search).each(function(_search, _key) {
+        	if (Rkns[_search.type] && Rkns[_search.type].Search) {
+        		_this.search_engines.push(new Rkns[_search.type].Search(_this, _search));
+        	}
+        });
+        _select.html(
+            Rkns._(this.search_engines).map(function(_search, _key) {
+                return _tmpl({
+                    key: _key,
+                    title: _search.getSearchTitle(),
+                    className: _search.getBgClass()
+                });
+            }).join("")
+        );
+        _select.find("li").click(function() {
+            var _el = Rkns.$(this);
+            _this.setSearchEngine(_el.attr("data-key"));
+            _form.submit();
+        });
+        _form.submit(function() {
+            if (_input.val()) {
+                var _search = _this.search_engine;
+                _search.search(_input.val());
+            }
+            return false;
+        });
+        this.$.find(".Rk-Search-Current").mouseenter(
+            function() { _select.slideDown(); }
+        );
+        this.$.find(".Rk-Search-Select").mouseleave(
+            function() { _select.hide(); }
+        );
+        this.setSearchEngine(0);
+    }
+    Rkns._(this.options.bins).each(function(_bin) {
+    	if (Rkns[_bin.type] && Rkns[_bin.type].Bin) {
+    		_this.tabs.push(new Rkns[_bin.type].Bin(_this, _bin));
+    	}
+    });
+    
+    this.$.find(".Rk-Bins")
+        .on("click",".Rk-Bin-Title,.Rk-Bin-Title-Icon", function() {
+            var _mainDiv = Rkns.$(this).siblings(".Rk-Bin-Main");
+            if (_mainDiv.is(":hidden")) {
+                _this.$.find(".Rk-Bin-Main").slideUp();
+                _mainDiv.slideDown();
+            }
+        }).on("mouseover", ".Rk-Bin-Item", function(_e) {
+            var _t = Rkns.$(this);
+            if (_t && $(_t).attr("data-uri")) {
+                var _models = _this.project.get("nodes").where({
+                    uri: $(_t).attr("data-uri")
+                });
+                Rkns._(_models).each(function(_model) {
+                    _this.renderer.highlightModel(_model);
+                });
+            }
+        }).mouseout(function() {
+            _this.renderer.unhighlightAll();
+        }).on("mousemove", ".Rk-Bin-Item", function(e) {
+			try {
+				this.dragDrop();
+			}
+			catch(err) {}
+        }).on("dragstart", ".Rk-Bin-Item", function(e) {
+        	var div = document.createElement('div');
+        	div.appendChild(this.cloneNode(true));
+			try {
+				e.originalEvent.dataTransfer.setData("text/html",div.innerHTML);
+			}
+			catch(err) {
+				e.originalEvent.dataTransfer.setData("text",div.innerHTML);
+			}
+        });
+    Rkns.$(window).resize(function() {
+        _this.resizeBins();
+    });
+    
+    this.$.find(".Rk-Bins-Search-Input").on("change keyup paste input", function() {
+       var val = Rkns.$(this).val();
+       Rkns._(_this.tabs).each(function(tab) {
+           tab.render(val);
+       });
+    });
+    this.$.find(".Rk-Bins-Search-Form").submit(function() {
+        return false
+    });
+}
+
+Rkns.Renkan.prototype.template = Rkns._.template(
+    '<% if (options.show_bins) { %><div class="Rk-Bins"><div class="Rk-Bins-Head"><h2 class="Rk-Bins-Title"><%- translate("Select contents:")%></h2>'
+    + '<form class="Rk-Web-Search-Form Rk-Search-Form"><input class="Rk-Web-Search-Input Rk-Search-Input" type="search" placeholder="<%- translate("Search the Web") %>" />'
+    + '<div class="Rk-Search-Select"><div class="Rk-Search-Current"></div><ul class="Rk-Search-List"></ul></div>'
+    + '<input type="submit" value="" class="Rk-Web-Search-Submit Rk-Search-Submit" title="<%- translate("Search the Web") %>" /></form>'
+    + '<form class="Rk-Bins-Search-Form Rk-Search-Form"><input class="Rk-Bins-Search-Input Rk-Search-Input" type="search" placeholder="<%- translate("Search in Bins") %>" />'
+    + '<input type="submit" value="" class="Rk-Bins-Search-Submit Rk-Search-Submit" title="<%- translate("Search in Bins") %>" /></form></div>'
+    + '<ul class="Rk-Bin-List"></ul></div><% } %><div class="Rk-Render Rk-Render-<% if (options.show_bins) { %>Panel<% } else { %>Full<% } %>"></div>'
+);
+
+Rkns.Renkan.prototype.onStatusChange = function() {
+	this.renderer.onStatusChange();
+}
+
+
+Rkns.Renkan.prototype.setSearchEngine = function(_key) {
+    this.search_engine = this.search_engines[_key];
+    this.$.find(".Rk-Search-Current").attr("class","Rk-Search-Current " + this.search_engine.getBgClass());
+}
+
+Rkns.Renkan.prototype.resizeBins = function() {
+    var _d = + this.$.find(".Rk-Bins-Head").outerHeight();
+    this.$.find(".Rk-Bin-Title:visible").each(function() {
+        _d += Rkns.$(this).outerHeight();
+    });
+    this.$.find(".Rk-Bin-Main").css({
+        height: this.$.find(".Rk-Bins").height() - _d
+    });
+}
+
+/* Utility functions */
+
+Rkns.Utils = {
+    _ID_AUTO_INCREMENT : 0,
+    _ID_BASE : (function(_d) {
+        function pad(n){return n<10 ? '0'+n : n}
+        function fillrand(n) {
+            var _res = ''
+            for (var i=0; i<n; i++) {
+                _res += Math.floor(16*Math.random()).toString(16);
+            }
+            return _res;
+        }
+        return _d.getUTCFullYear() + '-'  
+            + pad(_d.getUTCMonth()+1) + '-'  
+            + pad(_d.getUTCDate()) + '-'
+            + fillrand(16);
+    })(new Date()),
+    getUID : function(_base) {
+        var _n = (++this._ID_AUTO_INCREMENT).toString(16),
+            _base = (typeof _base === "undefined" ? "" : _base + "-" );
+        while (_n.length < 4) {
+            _n = '0' + _n
+        }
+        return _base + this._ID_BASE + '-' + _n;
+    },
+    inherit : function(_baseClass, _callbefore) {
+        var _class = function() {
+            if (typeof _callbefore === "function") {
+                _callbefore.apply(this, Array.prototype.slice.call(arguments, 0));
+            }
+            _baseClass.apply(this, Array.prototype.slice.call(arguments, 0));
+            if (typeof this._init == "function") {
+                this._init.apply(this, Array.prototype.slice.call(arguments, 0));
+            }
+        }
+        _class.prototype = new _baseClass();
+        return _class;
+    }
+}
\ No newline at end of file
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/js/models.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/integ/renkan/js/models.js	Wed Apr 03 18:56:34 2013 +0200
@@ -0,0 +1,271 @@
+(function() {
+    
+    var root = this;
+        
+    var Backbone = root.Backbone;
+    
+    var Models = root.Rkns.Models = {};
+    
+    
+    Models.getUID = function(obj) {
+        var guid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
+            var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
+            return v.toString(16);
+        });
+        return obj.type + "-" + guid; 
+    };
+    
+    
+    var RenkanModel = Backbone.RelationalModel.extend({
+        idAttribute : "_id",
+        constructor: function(options) {
+            
+            if (typeof options !== "undefined") {
+                options._id = options._id || options.id || Models.getUID(this);
+                options.title = options.title || "";
+                options.description = options.description || "";
+                options.uri = options.uri || "";
+                
+                if(typeof this.prepare === "function") {
+                    options = this.prepare(options);
+                }
+            }
+            Backbone.RelationalModel.prototype.constructor.call(this, options);
+        },
+        validate: function() {
+            if(!this.type) {
+                return "object has no type";
+            }
+        },
+        addReference : function(_options, _propName, _list, _id, _default) {
+            var _element = _list.get(_id);
+            if (typeof _element === "undefined" && typeof _default !== "undefined") {
+                _options[_propName ] = _default;
+            }
+            else {
+                _options[_propName ] = _element;
+            }
+        }
+    });
+        
+    // USER
+    var User = Models.User = RenkanModel.extend({
+        type: "user",
+        prepare: function(options) {
+            options.color = options.color || "#666666";
+            return options;
+        },
+        toJSON: function() {
+            return {
+                _id: this.get("_id"),
+                title: this.get("title"),
+                uri: this.get("uri"),
+                description: this.get("description"),
+                color: this.get("color"),
+            };
+        },
+    });
+    
+    // NODE
+    var Node = Models.Node = RenkanModel.extend({
+        type: "node",
+        relations: [{
+            type: Backbone.HasOne,
+            key: "created_by",
+            relatedModel: User
+        }],
+        prepare: function(options) {
+            project = options.project;
+            this.addReference(options, "created_by", project.get("users"), options.created_by, project.current_user);
+            options.description = options.description || "";
+            return options;
+        },
+        toJSON: function() {
+            return {
+                _id: this.get("_id"),
+                title: this.get("title"),
+                uri: this.get("uri"),
+                description: this.get("description"),
+                position: this.get("position"),
+                image: this.get("image"),
+                color: this.get("color"),
+                created_by: this.get("created_by") ? this.get("created_by").get("_id") : null,
+                size: this.get("size")
+            };
+        },
+    });
+    
+    // EDGE
+    var Edge = Models.Edge = RenkanModel.extend({
+        type: "edge",
+        relations: [
+          {
+            type: Backbone.HasOne,
+            key: "created_by",
+            relatedModel: User
+          },
+          {
+            type: Backbone.HasOne,
+            key: "from",
+            relatedModel: Node
+          },
+          {
+            type: Backbone.HasOne,
+            key: "to",
+            relatedModel: Node
+          },
+        ],
+        prepare: function(options) {
+            project = options.project;
+            this.addReference(options, "created_by", project.get("users"), options.created_by, project.current_user);
+            this.addReference(options, "from", project.get("nodes"), options.from);
+            this.addReference(options, "to", project.get("nodes"), options.to);
+            return options;
+        },
+        toJSON: function() {
+            return {
+                _id: this.get("_id"),
+                title: this.get("title"),
+                uri: this.get("uri"),
+                description: this.get("description"),
+                from: this.get("from") ? this.get("from").get("_id") : null,
+                to: this.get("to") ? this.get("to").get("_id") : null,
+                color: this.get("color"),
+                created_by: this.get("created_by") ? this.get("created_by").get("_id") : null
+            };
+        },
+    });
+        
+    // PROJECT
+    var Project = Models.Project = RenkanModel.extend({
+        type: "project",
+        relations: [
+          {
+            type: Backbone.HasMany,
+            key: "users",
+            relatedModel: User,
+            reverseRelation: {
+                key: 'project',
+                includeInJSON: '_id'
+            },
+          },
+          {
+            type: Backbone.HasMany,
+            key: "nodes",
+            relatedModel: Node,
+            reverseRelation: {
+                key: 'project',
+                includeInJSON: '_id'
+            },
+          },
+          {
+            type: Backbone.HasMany,
+            key: "edges",
+            relatedModel: Edge,
+            reverseRelation: {
+                key: 'project',
+                includeInJSON: '_id'
+            },
+          }
+        ],
+        addUser: function(_props, _options) {
+            _props.project = this;
+            var _user = User.findOrCreate(_props);
+            this.get("users").push(_user, _options);
+            return _user;
+        },
+        addNode: function(_props, _options) {
+            _props.project = this;            
+            var _node = Node.findOrCreate(_props);
+            this.get("nodes").push(_node, _options);
+            return _node;
+        },
+        addEdge: function(_props, _options) {
+            _props.project = this;
+            var _edge = Edge.findOrCreate(_props);
+            this.get("edges").push(_edge, _options);
+            return _edge;
+        },
+        removeNode: function(_model) {
+            this.get("nodes").remove(_model);
+        },
+        removeEdge: function(_model) {
+            this.get("edges").remove(_model);
+        },
+        validate: function(options) {
+            var _project = this;
+            _(options.users).each(function(_item) {
+                _item.project = _project;
+            });
+            _(options.nodes).each(function(_item) {
+                _item.project = _project;
+            });
+            _(options.edges).each(function(_item) {
+                _item.project = _project;
+            });
+        },
+        // Add event handler to remove edges when a node is removed
+        initialize: function() {
+            var _this = this;
+            this.on("remove:nodes", function(_node) {
+                _this.get("edges").remove(
+                    _this.get("edges").filter(function(_edge) {
+                        return _edge.get("from") == _node || _edge.get("to") == _node;
+                    })
+                );
+            });
+        }
+    });
+    
+    var RosterUser = Models.RosterUser = Backbone.Model.extend({
+        type: "roster_user",               
+        idAttribute : "_id",
+        
+        constructor: function(options) {
+            
+            if (typeof options !== "undefined") {
+                options._id = options._id || options.id || Models.getUID(this);
+                options.title = options.title || "(untitled " + this.type + ")";
+                options.description = options.description || "";
+                options.uri = options.uri || "";
+                options.project = options.project || null;
+                options.site_id = options.site_id || 0;
+                
+                if(typeof this.prepare === "function") {
+                    options = this.prepare(options);
+                }
+            }
+            Backbone.Model.prototype.constructor.call(this, options);
+        },
+        
+        validate: function() {
+            if(!this.type) {
+                return "object has no type";
+            }
+        },
+        
+        prepare: function(options) {
+            options.color = options.color || "#666666";
+            return options;
+        },
+        
+        toJSON: function() {
+            return {
+                _id: this.get("_id"),
+                title: this.get("title"),
+                uri: this.get("uri"),
+                description: this.get("description"),
+                color: this.get("color"),
+                project: (this.get("project") != null)?this.get("project").get("id"):null,
+                site_id: this.get("site_id")
+            };
+        },
+    });
+    
+    var UsersList = Models.UsersList = Backbone.Collection.extend({
+    	model: RosterUser
+    });
+    
+
+}).call(window);
+
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/js/paper-renderer.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/integ/renkan/js/paper-renderer.js	Wed Apr 03 18:56:34 2013 +0200
@@ -0,0 +1,2074 @@
+Rkns.Renderer = {
+    _MINIMAP_MARGIN: 20,
+    _MIN_DRAG_DISTANCE: 2,
+    _NODE_SIZE_BASE: 25,
+    _NODE_BUTTON_WIDTH: 40,
+    _EDGE_BUTTON_INNER: 2,
+    _EDGE_BUTTON_OUTER: 40,
+    _CLICKMODE_ADDNODE : 1,
+    _CLICKMODE_STARTEDGE : 2,
+    _CLICKMODE_ENDEDGE : 3,
+    _IMAGE_MAX_KB : 500,
+    _NODE_SIZE_STEP: Math.LN2/4,
+    _MIN_SCALE: 1/20,
+    _MAX_SCALE: 20,
+    _AUTOSCALE_MARGIN: 50,
+    _USER_PLACEHOLDER : function(_renkan) {
+    	return {
+    		color: _renkan.options.default_user_color,
+	        title: _renkan.translate("(unknown user)"),
+	        get: function(attr) {
+	            return this[attr] || false;
+	        }
+    	}
+    },
+    _BOOKMARKLET_CODE: function(_renkan) {
+    	return "(function(a,b,c,d,e,f,h,i,j,k,l,m,n,o,p,q,r){a=document;b=a.body;c=a.location.href;j='draggable';m='text/x-iri-';d=a.createElement('div');d.innerHTML='<p_style=\"position:fixed;top:0;right:0;font:bold_18px_sans-serif;color:#fff;background:#909;padding:10px;z-index:100000;\">"
+	    + _renkan.translate("Drag items from this website, drop them in Renkan").replace(/ /g,"_")
+	    + "</p>'.replace(/_/g,String.fromCharCode(32));b.appendChild(d);e=[{r:/https?:\\/\\/[^\\/]*twitter\\.com\\//,s:'.tweet',n:'twitter'},{r:/https?:\\/\\/[^\\/]*google\\.[^\\/]+\\//,s:'.g',n:'google'},{r:/https?:\\/\\/[^\\/]*lemonde\\.fr\\//,s:'[data-vr-contentbox]',n:'lemonde'}];f=false;e.forEach(function(g){if(g.r.test(c)){f=g;}});if(f){h=function(){Array.prototype.forEach.call(a.querySelectorAll(f.s),function(i){i[j]=true;k=i.style;k.borderWidth='2px';k.borderColor='#909';k.borderStyle='solid';k.backgroundColor='rgba(200,0,180,.1)';})};window.setInterval(h,500);h();};a.addEventListener('dragstart',function(k){l=k.dataTransfer;l.setData(m+'source-uri',c);l.setData(m+'source-title',a.title);n=k.target;if(f){o=n;while(!o.attributes[j]){o=o.parentNode;if(o==b){break;}}}if(f&&o.attributes[j]){p=o.cloneNode(true);l.setData(m+'specific-site',f.n)}else{q=a.getSelection();if(q.type==='Range'||!q.type){p=q.getRangeAt(0).cloneContents();}else{p=n.cloneNode();}}r=a.createElement('div');r.appendChild(p);l.setData('text/x-iri-selected-text',r.textContent.trim());l.setData('text/x-iri-selected-html',r.innerHTML);},false);})();"
+    }
+}
+
+Rkns.Renderer.Utils = {
+	shortenText : function(_text, _maxlength) {
+		return (_text.length > _maxlength ? (_text.substr(0,_maxlength) + '…') : _text);
+	},
+    drawEditBox : function(_options, _coords, _path, _xmargin, _selector) {
+    	_selector.css({
+            width: ( _options.tooltip_width - 2* _options.tooltip_padding ),
+        })
+        var _height = _selector.outerHeight() + 2* _options.tooltip_padding,
+            _isLeft = (_coords.x < paper.view.center.x ? 1 : -1),
+            _left = _coords.x + _isLeft * ( _xmargin + _options.tooltip_arrow_length ),
+            _right = _coords.x + _isLeft * ( _xmargin + _options.tooltip_arrow_length + _options.tooltip_width ),
+            _top = _coords.y - _height / 2;
+        if (_top < _options.tooltip_margin) {
+            _top = Math.min( _options.tooltip_margin, _coords.y - _options.tooltip_arrow_width / 2 );
+        }
+        var _bottom = _top + _height;
+        if (_bottom > (paper.view.size.height - _options.tooltip_margin)) {
+            _bottom = Math.max( paper.view.size.height - _options.tooltip_margin, _coords.y + _options.tooltip_arrow_width / 2 );
+            _top = _bottom - _height;
+        }
+        _path.segments[0].point
+            = _path.segments[7].point
+            = _coords.add([_isLeft * _xmargin, 0]);
+        _path.segments[1].point.x
+            = _path.segments[2].point.x
+            = _path.segments[5].point.x
+            = _path.segments[6].point.x
+            = _left;
+        _path.segments[3].point.x
+            = _path.segments[4].point.x
+            = _right;
+        _path.segments[2].point.y
+            = _path.segments[3].point.y
+            = _top;
+        _path.segments[4].point.y
+            = _path.segments[5].point.y
+            = _bottom;
+        _path.segments[1].point.y = _coords.y - _options.tooltip_arrow_width / 2;
+        _path.segments[6].point.y = _coords.y + _options.tooltip_arrow_width / 2;
+        _path.closed = true;
+        _path.fillColor = new paper.GradientColor(new paper.Gradient([_options.tooltip_top_color, _options.tooltip_bottom_color]), [0,_top], [0, _bottom]);
+        _selector.css({
+            left: (_options.tooltip_padding + Math.min(_left, _right)),
+            top: (_options.tooltip_padding + _top)
+        });
+    },
+    sector : function(_repr, _inR, _outR, _startAngle, _endAngle, _padding, _imgsrc, _caption) {
+        var _options = _repr.renderer.renkan.options,
+        	_startRads = _startAngle * Math.PI / 180,
+            _endRads = _endAngle * Math.PI / 180,
+            _img = new Image(),
+            _span = _endRads - _startRads,
+            _k = .0879 * _span,
+            _kin = _k * _inR,
+            _kout = _k * _outR,
+            _startdx = - Math.sin(_startRads),
+            _startdy = Math.cos(_startRads),
+            _startXIn = Math.cos(_startRads) * _inR + _padding * _startdx,
+            _startYIn = Math.sin(_startRads) * _inR + _padding * _startdy,
+            _startXOut = Math.cos(_startRads) * _outR + _padding * _startdx,
+            _startYOut = Math.sin(_startRads) * _outR + _padding * _startdy,
+            _enddx = - Math.sin(_endRads),
+            _enddy = Math.cos(_endRads),
+            _endXIn = Math.cos(_endRads) * _inR - _padding * _enddx,
+            _endYIn = Math.sin(_endRads) * _inR - _padding * _enddy,
+            _endXOut = Math.cos(_endRads) * _outR - _padding * _enddx,
+            _endYOut = Math.sin(_endRads) * _outR - _padding * _enddy,
+            _centerR = (_inR + _outR)/2,
+            _centerRads = (_startRads + _endRads) / 2,
+            _centerX = Math.cos(_centerRads) * _centerR,
+            _centerY = Math.sin(_centerRads) * _centerR,
+            _centerXIn = Math.cos(_centerRads) * _inR,
+            _centerXOut = Math.cos(_centerRads) * _outR,
+            _centerYIn = Math.sin(_centerRads) * _inR,
+            _centerYOut = Math.sin(_centerRads) * _outR,
+            _textX = Math.cos(_centerRads) * (_outR + 3),
+            _textY = Math.sin(_centerRads) * (_outR + 3),
+            _segments = [];
+    	_repr.renderer.buttons_layer.activate();
+        var _path = new paper.Path();
+        _path.add([_startXIn, _startYIn]);
+        _path.arcTo([_centerXIn, _centerYIn], [_endXIn, _endYIn]);
+        _path.lineTo([_endXOut,  _endYOut]);
+        _path.arcTo([_centerXOut, _centerYOut], [_startXOut, _startYOut]);
+        _path.fillColor = _options.buttons_background;
+        _path.opacity = .5;
+        _path.closed = true;
+        _path.__representation = _repr;
+        if (_textX >= -2 && _textX <= 2) {
+            if (_textY > 0) {
+                _textY += 6;
+            }
+        }
+        var _text = new paper.PointText(_textX,_textY);
+        _text.characterStyle = {
+            fontSize: _options.buttons_label_font_size,
+            fillColor: _options.buttons_label_color
+        };
+        if (_textX > 2) {
+            _text.paragraphStyle.justification = 'left';
+        } else if (_textX < -2) {
+            _text.paragraphStyle.justification = 'right';
+        } else {
+            _text.paragraphStyle.justification = 'center';
+        }
+        _text.visible = false;
+        var _visible = false,
+            _restPos = new paper.Point(-200, -200),
+            _grp = new paper.Group([_path, _text]),
+            _delta = _grp.position,
+            _imgdelta = new paper.Point([_centerX, _centerY]),
+            _currentPos = new paper.Point(0,0);
+        _text.content = _caption;
+        _grp.visible = false;
+        _grp.position = _restPos;
+        var _res = {
+            show: function() {
+                _visible = true;
+                _grp.position = _currentPos.add(_delta);
+                _grp.visible = true;
+            },
+            moveTo: function(_point) {
+                _currentPos = _point;
+                if (_visible) {
+                    _grp.position = _point.add(_delta);
+                }
+            },
+            hide: function() {
+                _visible = false;
+                _grp.visible = false;
+                _grp.position = _restPos;
+            },
+            select: function() {
+                _path.opacity = .8;
+                _text.visible = true;
+            },
+            unselect: function() {
+                _path.opacity = .5;
+                _text.visible = false;
+            },
+            destroy: function() {
+                _grp.remove();
+            }
+        }
+        _img.onload = function() {
+            var _h = _img.height;
+            var _raster = new paper.Raster(_img);
+            _raster.position = _imgdelta.add(_grp.position).subtract(_delta);
+            _grp.addChild(_raster);
+        }
+        _img.src = _imgsrc;
+        return _res
+    }
+}
+
+Rkns.Renderer._BaseRepresentation = function(_renderer, _model) {
+    if (typeof _renderer !== "undefined") {
+        this.renderer = _renderer;
+        this.renkan = _renderer.renkan;
+        this.project = _renderer.renkan.project;
+        this.options = _renderer.renkan.options;
+        this.model = _model;
+        if (this.model) {
+            var _this = this;
+            this._changeBinding = function() {
+                _this.redraw();
+            }
+            this._removeBinding = function() {
+                _renderer.removeRepresentation(_this);
+                _(function() {
+                	_renderer.redraw()
+            	}).defer();
+            }
+            this.model.on("change", this._changeBinding );
+            this.model.on("remove", this._removeBinding );
+        }
+    }
+}
+
+Rkns.Renderer._BaseRepresentation.prototype.super = function(_func) {
+    Rkns.Renderer._BaseRepresentation.prototype[_func].apply(this, Array.prototype.slice.call(arguments, 1));
+}
+
+Rkns.Renderer._BaseRepresentation.prototype.redraw = function() {}
+
+Rkns.Renderer._BaseRepresentation.prototype.moveTo = function() {}
+
+Rkns.Renderer._BaseRepresentation.prototype.show = function() {}
+
+Rkns.Renderer._BaseRepresentation.prototype.hide = function() {}
+
+Rkns.Renderer._BaseRepresentation.prototype.select = function() {}
+
+Rkns.Renderer._BaseRepresentation.prototype.unselect = function() {}
+
+Rkns.Renderer._BaseRepresentation.prototype.highlight = function() {}
+
+Rkns.Renderer._BaseRepresentation.prototype.unhighlight = function() {}
+
+Rkns.Renderer._BaseRepresentation.prototype.mouseup = function() {}
+
+Rkns.Renderer._BaseRepresentation.prototype.destroy = function() {
+    if (this.model) {
+        this.model.off("change", this._changeBinding );
+        this.model.off("remove", this._removeBinding );
+    }
+}
+
+Rkns.Renderer.Node = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.Node.prototype._init = function() {
+    this.renderer.node_layer.activate();
+    this.type = "Node";
+    this.circle = new paper.Path.Circle([0, 0], 1);
+    this.circle.__representation = this;
+    this.circle.fillColor = this.options.node_fill_color;
+    if (this.options.show_node_circles) {
+	    this.circle.strokeWidth = this.options.node_stroke_width;
+	    this.h_ratio = 1;
+    } else {
+    	this.circle.opacity = .01;
+    	this.h_ratio = 0;
+    }
+    this.title = new paper.PointText([0,0]);
+    this.title.characterStyle = {
+        font: this.options.node_label_font,
+        fontSize: this.options.node_label_font_size,
+        fillColor: this.options.node_label_color
+    };
+    if (this.options.editor_mode) {
+        this.edit_button = new Rkns.Renderer.NodeEditButton(this.renderer, null);
+        this.edit_button.node_representation = this;
+        this.remove_button = new Rkns.Renderer.NodeRemoveButton(this.renderer, null);
+        this.remove_button.node_representation = this;
+        this.link_button = new Rkns.Renderer.NodeLinkButton(this.renderer, null);
+        this.link_button.node_representation = this;
+    }
+    this.last_circle_radius = 1;
+    this.title.paragraphStyle.justification = 'center';
+    
+    if (this.renderer.minimap) {
+	    this.renderer.minimap.node_layer.activate();
+	    this.minimap_circle = new paper.Path.Circle([0, 0], 1);
+	    this.renderer.minimap.node_group.addChild(this.minimap_circle);
+    }
+}
+
+Rkns.Renderer.Node.prototype.redraw = function(_dontRedrawEdges) {
+    var _model_coords = new paper.Point(this.model.get("position")),
+    	_baseRadius = Rkns.Renderer._NODE_SIZE_BASE * Math.exp((this.model.get("size") || 0) * Rkns.Renderer._NODE_SIZE_STEP);
+    if (!this.is_dragging || !this.paper_coords) {
+        this.paper_coords = this.renderer.toPaperCoords(_model_coords);
+    }
+    this.circle_radius = _baseRadius * this.renderer.scale;
+    if (this.last_circle_radius !== this.circle_radius) {
+    	if (this.options.editor_mode) {
+	    	this.edit_button.setSectorSize();
+	    	this.remove_button.setSectorSize();
+	    	this.link_button.setSectorSize();
+	    }
+	    var square = new paper.Size(this.circle_radius, this.circle_radius),
+	    	topleft = this.paper_coords.subtract(square),
+	    	bounds = new paper.Rectangle(topleft, square.multiply(2));
+    	this.circle.fitBounds(bounds);
+	    if (this.node_image) {
+	    	this.node_image.fitBounds(bounds);
+	    }
+    } else {
+    	this.circle.position = this.paper_coords;
+    	if (this.node_image) {
+            this.node_image.position = this.paper_coords;
+        }
+    }
+    this.last_circle_radius = this.circle_radius;
+    
+    var _text = this.model.get("title") || this.renkan.translate("(untitled)");
+    this.title.content = Rkns.Renderer.Utils.shortenText(_text, this.options.node_label_max_length);
+
+    this.title.position = this.paper_coords.add([
+    	0,
+    	this.circle_radius * this.h_ratio + this.options.node_label_font_size + this.options.node_label_distance
+	]);
+    var _color = this.model.get("color") || (this.model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color");
+    this.circle.strokeColor = _color;
+    if (this.options.editor_mode) {
+    	this.edit_button.moveTo(this.paper_coords);
+	    this.remove_button.moveTo(this.paper_coords);
+	    this.link_button.moveTo(this.paper_coords);
+    }
+    var _img = this.model.get("image");
+    if (_img && _img !== this.img) {
+        var _image = new Image(),
+            _this = this;
+        _image.onload = function() {
+            if (_this.node_image) {
+                _this.node_image.remove();
+            }
+            _this.renderer.node_layer.activate();
+            var _ratio = Math.min(2 / _image.width, 2 / _image.height );
+            if (!_this.options.show_node_circles) {
+            	_this.h_ratio = Math.min(1, _image.height / _image.width);
+            }
+            var _raster = new paper.Raster(_image);
+            if (_this.options.clip_node_images) {
+	            var _clip = new paper.Path.Circle([0, 0], 1);
+	            _raster.scale(_ratio);
+	            _this.node_image = new paper.Group(_clip, _raster);
+	            _this.node_image.opacity = .99;
+	            /* This is a workaround to allow clipping at group level
+	             * If opacity was set to 1, paper.js would merge all clipping groups in one (known bug).
+	            */
+	            _this.node_image.clipped = true;
+            	_clip.__representation = _this;
+            } else {
+            	_this.node_image = _raster;
+            }
+            _this.node_image.__representation = _this;
+		    var square = new paper.Size(_this.circle_radius, _this.circle_radius),
+		    	topleft = _this.paper_coords.subtract(square),
+		    	bounds = new paper.Rectangle(topleft, square.multiply(2));
+		    _this.node_image.fitBounds(bounds);
+            _this.redraw();
+        }
+        _image.src = _img;
+    }
+    this.img = _img;
+    if (this.node_image && !this.img) {
+        this.node_image.remove();
+        delete this.node_image;
+    }
+    
+    if (this.renderer.minimap) {
+	    this.minimap_circle.fillColor = _color;
+	    var minipos = this.renderer.toMinimapCoords(_model_coords),
+	    	miniradius = this.renderer.minimap.scale * _baseRadius,
+	    	minisize = new paper.Size([miniradius, miniradius]);
+	    this.minimap_circle.fitBounds(minipos.subtract(minisize), minisize.multiply(2));
+    }
+    
+    if (!_dontRedrawEdges) {
+    	Rkns._.each(this.project.get("edges").filter(function (ed) { return ((ed.to === this.model) || (ed.from === this.model));}), function(edge, index, list){
+	        var repr = this.renderer.getRepresentationByModel(edge);
+	    	if(repr != null && typeof repr.from_representation.paper_coords !== "undefined" && typeof repr.to_representation.paper_coords !== "undefined") {
+	    		repr.redraw();
+	    	}
+	    }, this);
+    }
+
+}
+
+Rkns.Renderer.Node.prototype.paperShift = function(_delta) {
+	if (this.options.editor_mode) {
+		if (!this.renkan.read_only) {
+			this.is_dragging = true;
+			this.paper_coords = this.paper_coords.add(_delta);
+	    	this.redraw();
+    	}
+	} else {
+		this.renderer.paperShift(_delta);
+	}
+}
+
+Rkns.Renderer.Node.prototype.openEditor = function() {
+    this.renderer.removeRepresentationsOfType("editor");
+    var _editor = this.renderer.addRepresentation("NodeEditor",null);
+    _editor.node_representation = this;
+    _editor.draw();
+}
+
+Rkns.Renderer.Node.prototype.select = function() {
+    this.circle.strokeWidth = this.options.selected_node_stroke_width;
+    if (this.renderer.isEditable()) {
+	    this.edit_button.show();
+	    this.remove_button.show();
+	    this.link_button.show();
+    }
+    var _uri = this.model.get("uri");
+    if (_uri) {
+    	Rkns.$('.Rk-Bin-Item').each(function() {
+	        var _el = Rkns.$(this);
+	        if (_el.attr("data-uri") == _uri) {
+	            _el.addClass("selected");
+	        }
+	    });
+    }
+    if (!this.options.editor_mode) {
+        this.openEditor();
+    }
+    
+    if (this.renderer.minimap) {
+		this.minimap_circle.strokeWidth = this.options.minimap_highlight_weight;
+    	this.minimap_circle.strokeColor = this.options.minimap_highlight_color;
+    }
+}
+
+Rkns.Renderer.Node.prototype.unselect = function(_newTarget) {
+    if (!_newTarget || _newTarget.node_representation !== this) {
+	    if (this.options.editor_mode) {
+	        this.edit_button.hide();
+	        this.remove_button.hide();
+	        this.link_button.hide();
+	   	}
+    	this.circle.strokeWidth = this.options.node_stroke_width;
+        Rkns.$('.Rk-Bin-Item').removeClass("selected");
+    	if (this.renderer.minimap) {
+    		this.minimap_circle.strokeColor = undefined;
+    	}
+    }
+}
+
+Rkns.Renderer.Node.prototype.highlight = function() {
+    this.circle.fillColor = this.options.highlighted_node_fill_color;
+    if (this.node_image) {
+        this.node_image.opacity = .5;
+    }
+}
+
+Rkns.Renderer.Node.prototype.unhighlight = function(_newTarget) {
+    this.circle.fillColor = this.options.node_fill_color;
+    if (this.node_image) {
+        this.node_image.opacity = .99;
+    }
+}
+
+Rkns.Renderer.Node.prototype.saveCoords = function() {
+    var _coords = this.renderer.toModelCoords(this.paper_coords),
+        _data = {
+            position: {
+                x: _coords.x,
+                y: _coords.y
+            }
+        };
+    if (this.renderer.isEditable()) {
+    	this.model.set(_data);
+    }
+}
+
+Rkns.Renderer.Node.prototype.mouseup = function(_event) {
+    if (this.renderer.isEditable() && this.renderer.is_dragging) {
+        this.saveCoords();
+    }
+    else {
+        this.openEditor();
+    }
+    this.renderer.click_target = null;
+    this.renderer.is_dragging = false;
+    this.is_dragging = false;
+}
+
+Rkns.Renderer.Node.prototype.destroy = function(_event) {
+    this.super("destroy");
+    if (this.options.editor_mode) {
+	    this.edit_button.destroy();
+	    this.remove_button.destroy();
+	    this.link_button.destroy();
+    }
+    this.circle.remove();
+    this.title.remove();
+    if (this.renderer.minimap) {
+    	this.minimap_circle.remove();
+    }
+    if (this.node_image) {
+        this.node_image.remove();
+    }
+}
+
+/* */
+
+Rkns.Renderer.Edge = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.Edge.prototype._init = function() {
+    this.renderer.edge_layer.activate();
+    this.type = "Edge";
+    this.from_representation = this.renderer.getRepresentationByModel(this.model.get("from"));
+    this.to_representation = this.renderer.getRepresentationByModel(this.model.get("to"));
+    this.bundle = this.renderer.addToBundles(this);
+    this.line = new paper.Path();
+    this.line.add([0,0],[0,0],[0,0]);
+    this.line.__representation = this;
+    this.line.strokeWidth = this.options.edge_stroke_width;
+    this.arrow = new paper.Path();
+    this.arrow.add(
+    	[ 0, 0 ],
+    	[ this.options.edge_arrow_length, this.options.edge_arrow_width / 2 ],
+    	[ 0, this.options.edge_arrow_width ]
+	);
+    this.arrow.__representation = this;
+    this.text = new paper.PointText();
+    this.text.characterStyle = {
+        font: this.options.edge_label_font,
+        fontSize: this.options.edge_label_font_size,
+        fillColor: this.options.edge_label_color
+    };
+    this.text.paragraphStyle.justification = 'center';
+    this.text_angle = 0;
+    this.arrow_angle = 0;
+    if (this.options.editor_mode) {
+        this.edit_button = new Rkns.Renderer.EdgeEditButton(this.renderer, null);
+        this.edit_button.edge_representation = this;
+        this.remove_button = new Rkns.Renderer.EdgeRemoveButton(this.renderer, null);
+        this.remove_button.edge_representation = this;
+    }
+    
+    if (this.renderer.minimap) {
+    	this.renderer.minimap.edge_layer.activate();
+	    this.minimap_line = new paper.Path();
+	    this.minimap_line.add([0,0],[0,0]);
+	    this.minimap_line.strokeWidth = 1;
+    }
+}
+
+Rkns.Renderer.Edge.prototype.redraw = function() {
+    this.from_representation = this.renderer.getRepresentationByModel(this.model.get("from"));
+    this.to_representation = this.renderer.getRepresentationByModel(this.model.get("to"));
+    if (!this.from_representation || !this.to_representation) {
+    	return;
+    }
+    var _p0a = this.from_representation.paper_coords,
+        _p1a = this.to_representation.paper_coords,
+        _v = _p1a.subtract(_p0a),
+        _r = _v.length,
+        _u = _v.divide(_r),
+        _ortho = new paper.Point([- _u.y, _u.x]),
+        _group_pos = this.bundle.getPosition(this),
+        _delta = _ortho.multiply( this.options.edge_gap_in_bundles * _group_pos ),
+        _p0b = _p0a.add(_delta), /* Adding a 4 px difference */
+        _p1b = _p1a.add(_delta), /* to differentiate bundled links */
+        _a = _v.angle,
+        _textdelta = _ortho.multiply(this.options.edge_label_distance),
+        _handle = _v.divide(3),
+        _color = this.model.get("color") || this.model.get("color") || (this.model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color");
+    this.paper_coords = _p0b.add(_p1b).divide(2);
+    this.line.strokeColor = _color;
+    this.line.segments[0].point = _p0a;
+    this.line.segments[1].point = this.paper_coords;
+    this.line.segments[1].handleIn = _handle.multiply(-1);
+    this.line.segments[1].handleOut = _handle;
+    this.line.segments[2].point = _p1a;
+    this.arrow.rotate(_a - this.arrow_angle);
+    this.arrow.fillColor = _color;
+    this.arrow.position = this.paper_coords;
+    this.arrow_angle = _a;
+    if (_a > 90) {
+        _a -= 180;
+        _textdelta = _textdelta.multiply(-1);
+    }
+    if (_a < -90) {
+        _a += 180;
+        _textdelta = _textdelta.multiply(-1);
+    }
+    this.text.rotate(_a - this.text_angle);
+    var _text = this.model.get("title");
+    this.text.content = Rkns.Renderer.Utils.shortenText(_text, this.options.edge_label_max_length);
+    this.text.position = this.paper_coords.add(_textdelta);
+    this.text_angle = _a;
+    if (this.options.editor_mode) {
+	    this.edit_button.moveTo(this.paper_coords);
+	    this.remove_button.moveTo(this.paper_coords);
+    }
+    
+    if (this.renderer.minimap) {
+	    this.minimap_line.strokeColor = _color;
+	    this.minimap_line.segments[0].point = this.renderer.toMinimapCoords(new paper.Point(this.from_representation.model.get("position")));
+ 	    this.minimap_line.segments[1].point = this.renderer.toMinimapCoords(new paper.Point(this.to_representation.model.get("position")));
+    }
+}
+
+Rkns.Renderer.Edge.prototype.openEditor = function() {
+    this.renderer.removeRepresentationsOfType("editor");
+    var _editor = this.renderer.addRepresentation("EdgeEditor",null);
+    _editor.edge_representation = this;
+    _editor.draw();
+}
+
+Rkns.Renderer.Edge.prototype.select = function() {
+    this.line.strokeWidth = this.options.selected_edge_stroke_width;
+    if (this.renderer.isEditable()) {
+	    this.edit_button.show();
+	    this.remove_button.show();
+   	}
+    if (!this.options.editor_mode) {
+        this.openEditor();
+    }
+}
+
+Rkns.Renderer.Edge.prototype.unselect = function(_newTarget) {
+    if (!_newTarget || _newTarget.edge_representation !== this) {
+    	if (this.options.editor_mode) {
+	        this.edit_button.hide();
+	        this.remove_button.hide();
+        }
+        this.line.strokeWidth = this.options.edge_stroke_width;
+    }
+}
+
+Rkns.Renderer.Edge.prototype.mouseup = function(_event) {
+    if (!this.renkan.read_only) {
+        if (this.renderer.is_dragging) {
+            this.from_representation.saveCoords();
+            this.to_representation.saveCoords();
+        } else {
+            this.openEditor();
+        }
+    }
+    this.renderer.click_target = null;
+    this.renderer.is_dragging = false;
+}
+
+Rkns.Renderer.Edge.prototype.paperShift = function(_delta) {
+	if (this.options.editor_mode) {
+		if (!this.options.read_only) {
+		    this.from_representation.paperShift(_delta);
+		    this.to_representation.paperShift(_delta);
+	    }
+	} else {
+		this.renderer.paperShift(_delta);
+	}
+}
+
+Rkns.Renderer.Edge.prototype.destroy = function() {
+    this.super("destroy");
+    this.line.remove();
+    this.arrow.remove();
+    this.text.remove();
+    if (this.renderer.minimap) {
+   	    this.minimap_line.remove();
+    }
+    if (this.options.editor_mode) {
+	    this.edit_button.destroy();
+	    this.remove_button.destroy();
+   	}
+    var _this = this;
+    this.bundle.edges = Rkns._(this.bundle.edges).reject(function(_edge) {
+        return _edge === _this;
+    });
+}
+
+/* */
+
+Rkns.Renderer.TempEdge = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.TempEdge.prototype._init = function() {
+    this.renderer.edge_layer.activate();
+    this.type = "temp-edge";
+    
+    var _color = (this.project.get("users").get(this.renkan.current_user) || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color");
+    this.line = new paper.Path();
+    this.line.strokeColor = _color;
+    this.line.add([0,0],[0,0]);
+    this.line.__representation = this;
+    this.arrow = new paper.Path();
+    this.arrow.fillColor = _color;
+    this.arrow.add(
+    	[ 0, 0 ],
+    	[ this.options.edge_arrow_length, this.options.edge_arrow_width / 2 ],
+    	[ 0, this.options.edge_arrow_width ]
+	);
+    this.arrow.__representation = this;
+    this.arrow_angle = 0;
+}
+
+Rkns.Renderer.TempEdge.prototype.redraw = function() {
+    var _p0 = this.from_representation.paper_coords,
+        _p1 = this.end_pos,
+        _a = _p1.subtract(_p0).angle,
+        _c = _p0.add(_p1).divide(2);
+    this.line.segments[0].point = _p0;
+    this.line.segments[1].point = _p1;
+    this.arrow.rotate(_a - this.arrow_angle);
+    this.arrow.position = _c;
+    this.arrow_angle = _a;
+}
+
+Rkns.Renderer.TempEdge.prototype.paperShift = function(_delta) {
+	if (!this.renderer.isEditable()) {
+		this.renderer.removeRepresentation(_this);
+    	paper.view.draw();
+    	return;
+	}
+    this.end_pos = this.end_pos.add(_delta);
+    var _hitResult = paper.project.hitTest(this.end_pos);
+    this.renderer.findTarget(_hitResult);
+    this.redraw();
+}
+
+Rkns.Renderer.TempEdge.prototype.mouseup = function(_event) {
+    var _hitResult = paper.project.hitTest(_event.point),
+        _model = this.from_representation.model,
+        _endDrag = true;
+    if (_hitResult && typeof _hitResult.item.__representation !== "undefined") {
+        var _target = _hitResult.item.__representation;
+        if (_target.type === "Node" && _model !== _target.model) {
+            var _data = {
+                id: Rkns.Utils.getUID('edge'),
+                created_by: this.renkan.current_user,
+                from: _model.get("_id"),
+                to: _target.model.get("_id")
+            };
+            if (this.renderer.isEditable()) {
+            	this.project.addEdge(_data);
+            }
+        }
+        if (_model === _target.model || (_target.node_representation && _target.node_representation.model === _model)) {
+            _endDrag = false;
+            this.renderer.is_dragging = true;
+        }
+    }
+    if (_endDrag) {
+        this.renderer.click_target = null;
+        this.renderer.is_dragging = false;
+        this.renderer.removeRepresentation(this);
+        paper.view.draw();
+    }
+}
+
+Rkns.Renderer.TempEdge.prototype.destroy = function() {
+    this.arrow.remove();
+    this.line.remove();
+}
+
+/* */
+
+Rkns.Renderer.NodeEditor = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.NodeEditor.prototype._init = function() {
+    this.renderer.buttons_layer.activate();
+    this.type = "editor";
+    this.editor_block = new paper.Path();
+    var _pts = Rkns._(Rkns._.range(8)).map(function() {return [0,0]});
+    this.editor_block.add.apply(this.editor_block, _pts);
+    this.editor_block.strokeWidth = this.options.tooltip_border_width;
+    this.editor_block.strokeColor = this.options.tooltip_border_color;
+    this.editor_block.opacity = .8;
+    this.editor_$ = Rkns.$('<div>')
+        .appendTo(this.renderer.editor_$)
+        .css({
+            position: "absolute",
+            opacity: .8
+        })
+        .hide();
+}
+
+Rkns.Renderer.NodeEditor.prototype.template = Rkns._.template(
+    '<h2><span class="Rk-CloseX">&times;</span><%-translate("Edit Node")%></span></h2>'
+    + '<p><label><%-translate("Title:")%></label><input class="Rk-Edit-Title" type="text" value="<%-node.title%>"/></p>'
+    + '<p><label><%-translate("URI:")%></label><input class="Rk-Edit-URI" type="text" value="<%-node.uri%>"/><a class="Rk-Edit-Goto" href="<%-node.uri%>" target="_blank"></a></p>'
+    + '<p><label><%-translate("Description:")%></label><textarea class="Rk-Edit-Description"><%-node.description%></textarea></p>'
+    + '<p><span class="Rk-Editor-Label"><%-translate("Size:")%></span><a href="#" class="Rk-Edit-Size-Down">-</a><span class="Rk-Edit-Size-Value"><%-node.size%></span><a href="#" class="Rk-Edit-Size-Up">+</a></p>'
+    + '<div class="Rk-Editor-p"><span class="Rk-Editor-Label"><%-translate("Node color:")%></span><div class="Rk-Edit-ColorPicker-Wrapper"><span class="Rk-Edit-Color" style="background:<%-node.color%>;"><span class="Rk-Edit-ColorTip"></span></span><ul class="Rk-Edit-ColorPicker">'
+    + '<% _(Rkns.pickerColors).each(function(c) { %><li data-color="<%=c%>" style="background: <%=c%>"></li><% }); %></ul><span class="Rk-Edit-ColorPicker-Text"><%- translate("Choose color") %></span></div></div>'
+    + '<img class="Rk-Edit-ImgPreview" src="<%-node.image || node.image_placeholder%>" />'
+    + '<p><label><%-translate("Image URL:")%></label><input class="Rk-Edit-Image" type="text" value="<%-node.image%>"/></p>'
+    + '<p><label><%-translate("Choose Image File:")%></label><input class="Rk-Edit-Image-File" type="file" accept="image/*"/></p>'    
+    + '<% if (node.has_creator) { %><p><span class="Rk-Editor-Label"><%-translate("Created by:")%></span> <span class="Rk-UserColor" style="background:<%-node.created_by_color%>;"></span><%- Rkns.Renderer.Utils.shortenText(node.created_by_title, 25) %></p><% } %>'
+);
+
+Rkns.Renderer.NodeEditor.prototype.readOnlyTemplate = Rkns._.template(
+    '<h2><span class="Rk-CloseX">&times;</span><span class="Rk-UserColor" style="background:<%-node.color%>;"></span>'
+    + '<span class="Rk-Display-Title"><% if (node.uri) { %><a href="<%-node.uri%>" target="_blank"><% } %><%-node.title%><% if (node.uri) { %></a><% } %></span></h2>'
+    + '<% if (node.uri) { %><p class="Rk-Display-URI"><a href="<%-node.uri%>" target="_blank"><%-node.short_uri%></a></p><% } %>'
+    + '<p><%-node.description%></p>'
+    + '<% if (node.has_creator) { %><p><span class="Rk-Editor-Label"><%-translate("Created by:")%></span><span class="Rk-UserColor" style="background:<%-node.created_by_color%>;"></span><%- Rkns.Renderer.Utils.shortenText(node.created_by_title, 25) %></p><% } %>'
+);
+
+Rkns.Renderer.NodeEditor.prototype.draw = function() {
+    var _model = this.node_representation.model,
+        _created_by = _model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan),
+        _template = (this.renderer.isEditable() ? this.template : this.readOnlyTemplate ),
+        _image_placeholder = this.options.static_url + "img/image-placeholder.png",
+        _size = (_model.get("size") || 0);
+    this.editor_$
+        .html(_template({
+            node: {
+            	has_creator: !!_model.get("created_by"),
+                title: _model.get("title"),
+                uri: _model.get("uri"),
+                short_uri:  Rkns.Renderer.Utils.shortenText((_model.get("uri") || "").replace(/^(https?:\/\/)?(www\.)?/,'').replace(/\/$/,''),40),
+                description: _model.get("description"),
+                image: _model.get("image") || "",
+                image_placeholder: _image_placeholder,
+                color: _model.get("color") || _created_by.get("color"),
+                created_by_color: _created_by.get("color"),
+                created_by_title: _created_by.get("title"),
+                size: (_size > 0 ? "+" : "") + _size
+            },
+            translate: this.renkan.translate
+        }));
+    this.redraw();
+    var _this = this,
+    	closeEditor = function() {
+    		_this.renderer.removeRepresentation(_this);
+        	paper.view.draw();
+    	}
+    	
+    this.editor_$.find(".Rk-CloseX").click(closeEditor);
+    
+    if (this.renderer.isEditable()) {
+    	
+    	var onFieldChange = Rkns._(function() {
+    		Rkns._(function() {
+	            if (_this.renderer.isEditable()) {
+		            var _uri = _this.editor_$.find(".Rk-Edit-URI").val(),
+		                _image = _this.editor_$.find(".Rk-Edit-Image").val();
+		            _this.editor_$.find(".Rk-Edit-ImgPreview").attr("src", _image || _image_placeholder);
+		            _this.editor_$.find(".Rk-Edit-Goto").attr("href",_uri);
+		            var _data = {
+		                title: _this.editor_$.find(".Rk-Edit-Title").val(),
+		                description: _this.editor_$.find(".Rk-Edit-Description").val(),
+		                uri: _uri,
+		                image: _image
+		            }
+	            	_model.set(_data);
+	            	_this.redraw();
+	            } else {
+	            	closeEditor();
+	            }
+	            
+    		}).defer();
+    	}).throttle(500);
+    	
+    	this.editor_$.find("input, textarea").bind("change keyup paste", onFieldChange);
+    	
+        this.editor_$.find(".Rk-Edit-Image-File").bind("change", function() {
+        	if (this.files.length) {
+        		var f = this.files[0],
+        			fr = new FileReader();
+    			if (f.type.substr(0,5) !== "image") {
+    				alert(_this.renkan.translate("This file is not an image"));
+    				return;
+    			}
+    			if (f.size > (Rkns.Renderer._IMAGE_MAX_KB * 1024)) {
+    				alert(_this.renkan.translate("Image size must be under ")+Rkns.Renderer._IMAGE_MAX_KB+_this.renkan.translate("KB"));
+    				return;
+    			}
+        		fr.onload = function(e) {
+        			_this.editor_$.find(".Rk-Edit-Image").val(e.target.result);
+        			onFieldChange();
+        		}
+        		fr.readAsDataURL(f);
+        	}
+        });
+        this.editor_$.find(".Rk-Edit-Title")[0].focus();
+        this.editor_$.find(".Rk-Edit-ColorPicker-Wrapper").hover(
+            function() { _this.editor_$.find(".Rk-Edit-ColorPicker").show(); },
+            function() { _this.editor_$.find(".Rk-Edit-ColorPicker").hide(); }
+        );
+        this.editor_$.find(".Rk-Edit-ColorPicker li").hover(
+            function() { _this.editor_$.find(".Rk-Edit-Color").css("background", $(this).attr("data-color")); },
+            function() { _this.editor_$.find(".Rk-Edit-Color").css("background", _model.get("color") || (_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color")) }
+        ).click(function() {
+            if (_this.renderer.isEditable()) {
+	            _model.set("color", $(this).attr("data-color"));
+				paper.view.draw();
+            } else {
+            	closeEditor();
+            }
+        });
+        
+        function shiftSize(n) {
+        	if (_this.renderer.isEditable()) {
+	        	var _newsize = n+(_model.get("size") || 0);
+	        	_this.editor_$.find(".Rk-Edit-Size-Value").text((_newsize > 0 ? "+" : "") + _newsize);
+	        	_model.set("size", _newsize);
+				paper.view.draw();
+			} else {
+				closeEditor();
+			}
+        }
+        
+        this.editor_$.find(".Rk-Edit-Size-Down").click(function() {
+        	shiftSize(-1);
+        	return false;
+        });
+        this.editor_$.find(".Rk-Edit-Size-Up").click(function() {
+        	shiftSize(1);
+        	return false;
+        });
+    }
+    this.editor_$.find("img").load(function() {
+        _this.redraw();
+    });
+}
+
+Rkns.Renderer.NodeEditor.prototype.redraw = function() {
+    var _coords = this.node_representation.paper_coords;
+    Rkns.Renderer.Utils.drawEditBox(this.options, _coords, this.editor_block, this.node_representation.circle_radius * .75, this.editor_$);
+    this.editor_$.show();
+    paper.view.draw();
+}
+
+Rkns.Renderer.NodeEditor.prototype.destroy = function() {
+    this.editor_block.remove();
+    this.editor_$.detach();
+}
+
+/* */
+
+Rkns.Renderer.EdgeEditor = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.EdgeEditor.prototype._init = function() {
+    this.renderer.buttons_layer.activate();
+    this.type = "editor";
+    this.editor_block = new paper.Path();
+    var _pts = Rkns._(Rkns._.range(8)).map(function() {return [0,0]});
+    this.editor_block.add.apply(this.editor_block, _pts);
+    this.editor_block.strokeWidth = this.options.tooltip_border_width;
+    this.editor_block.strokeColor = this.options.tooltip_border_color;
+    this.editor_block.opacity = .8;
+    this.editor_$ = Rkns.$('<div>')
+        .appendTo(this.renderer.editor_$)
+        .css({
+            position: "absolute",
+            opacity: .8
+        })
+        .hide();
+}
+
+Rkns.Renderer.EdgeEditor.prototype.template = Rkns._.template(
+    '<h2><span class="Rk-CloseX">&times;</span><%-translate("Edit Edge")%></span></h2>'
+    + '<p><label><%-translate("Title:")%></label><input class="Rk-Edit-Title" type="text" value="<%-edge.title%>"/></p>'
+    + '<p><label><%-translate("URI:")%></label><input class="Rk-Edit-URI" type="text" value="<%-edge.uri%>"/><a class="Rk-Edit-Goto" href="<%-edge.uri%>" target="_blank"></a></p>'
+    + '<% if (properties.length) { %><p><label><%-translate("Choose from vocabulary:")%></label><select class="Rk-Edit-Vocabulary">'
+    + '<% _(properties).each(function(ontology) { %><option class="Rk-Edit-Vocabulary-Class" value=""><%- translate(ontology.label) %></option>'
+    + '<% _(ontology.properties).each(function(property) { var uri = ontology["base-uri"] + property.uri; %><option class="Rk-Edit-Vocabulary-Property" value="<%- uri %>'
+    + '"<% if (uri === edge.uri) { %> selected<% } %>><%- translate(property.label) %></option>'
+    + '<% }) %><% }) %></select></p><% } %>'
+    + '<div class="Rk-Editor-p"><span class="Rk-Editor-Label"><%-translate("Edge color:")%></span><div class="Rk-Edit-ColorPicker-Wrapper"><span class="Rk-Edit-Color" style="background:<%-edge.color%>;"><span class="Rk-Edit-ColorTip"></span></span><ul class="Rk-Edit-ColorPicker">'
+    + '<% _(Rkns.pickerColors).each(function(c) { %><li data-color="<%=c%>" style="background: <%=c%>"></li><% }); %></ul><span class="Rk-Edit-ColorPicker-Text"><%- translate("Choose color") %></span></div></div>'
+    + '<p><span class="Rk-Edit-Direction"><%- translate("Change edge direction") %></span></p>'
+    + '<p><span class="Rk-Editor-Label"><%-translate("From:")%></span><span class="Rk-UserColor" style="background:<%-edge.from_color%>;"></span><%- Rkns.Renderer.Utils.shortenText(edge.from_title, 25) %></p>'
+    + '<p><span class="Rk-Editor-Label"><%-translate("To:")%></span><span class="Rk-UserColor" style="background:<%-edge.to_color%>;"></span><%- Rkns.Renderer.Utils.shortenText(edge.to_title, 25) %></p>'
+    + '<% if (edge.has_creator) { %><p><span class="Rk-Editor-Label"><%-translate("Created by:")%></span><span class="Rk-UserColor" style="background:<%-edge.created_by_color%>;"></span><%- Rkns.Renderer.Utils.shortenText(edge.created_by_title, 25) %></p><% } %>'
+);
+
+Rkns.Renderer.EdgeEditor.prototype.readOnlyTemplate = Rkns._.template(
+    '<h2><span class="Rk-CloseX">&times;</span><span class="Rk-UserColor" style="background:<%-edge.color%>;"></span>'
+    + '<span class="Rk-Display-Title"><% if (edge.uri) { %><a href="<%-edge.uri%>" target="_blank"><% } %><%-edge.title%><% if (edge.uri) { %></a><% } %></span></h2>'
+    + '<% if (edge.uri) { %><p class="Rk-Display-URI"><a href="<%-edge.uri%>" target="_blank"><%-edge.short_uri%></a></p><% } %>'
+    + '<p><%-edge.description%></p>'
+    + '<p><span class="Rk-Editor-Label"><%-translate("From:")%></span><span class="Rk-UserColor" style="background:<%-edge.from_color%>;"></span><%- Rkns.Renderer.Utils.shortenText(edge.from_title, 25) %></p>'
+    + '<p><span class="Rk-Editor-Label"><%-translate("To:")%></span><span class="Rk-UserColor" style="background:<%-edge.to_color%>;"></span><%- Rkns.Renderer.Utils.shortenText(edge.to_title, 25) %></p>'
+    + '<% if (edge.has_creator) { %><p><span class="Rk-Editor-Label"><%-translate("Created by:")%></span><span class="Rk-UserColor" style="background:<%-edge.created_by_color%>;"></span><%- Rkns.Renderer.Utils.shortenText(edge.created_by_title, 25) %></p><% } %>'
+);
+
+Rkns.Renderer.EdgeEditor.prototype.draw = function() {
+    var _model = this.edge_representation.model,
+        _from_model = _model.get("from"),
+        _to_model = _model.get("to"),
+        _created_by = _model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan),
+        _template = (this.renderer.isEditable() ? this.template : this.readOnlyTemplate);
+    this.editor_$
+        .html(_template({
+            edge: {
+            	has_creator: !!_model.get("created_by"),
+                title: _model.get("title"),
+                uri: _model.get("uri"),
+                short_uri:  Rkns.Renderer.Utils.shortenText((_model.get("uri") || "").replace(/^(https?:\/\/)?(www\.)?/,'').replace(/\/$/,''),40),
+                description: _model.get("description"),
+                color: _model.get("color") || _created_by.get("color"),
+                from_title: _from_model.get("title"),
+                to_title: _to_model.get("title"),
+                from_color: _from_model.get("color") || (_from_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color"),
+                to_color: _to_model.get("color") || (_to_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color"),
+                created_by_color: _created_by.get("color"),
+                created_by_title: _created_by.get("title")
+            },
+            translate: this.renkan.translate,
+            properties: this.options.properties
+        }));
+    this.redraw();
+    var _this = this,
+    	closeEditor = function() {
+	        _this.renderer.removeRepresentation(_this);
+	        paper.view.draw();
+    	}
+    this.editor_$.find(".Rk-CloseX").click(closeEditor);
+    
+    if (this.renderer.isEditable()) {
+    	
+    	var onFieldChange = Rkns._(function() {
+    		Rkns._(function() {
+    			if (_this.renderer.isEditable()) {
+	    			_this.editor_$.find(".Rk-Edit-Goto").attr("href",_this.editor_$.find(".Rk-Edit-URI").val());
+		            var _data = {
+		                title: _this.editor_$.find(".Rk-Edit-Title").val(),
+		                uri: _this.editor_$.find(".Rk-Edit-URI").val()
+		            }
+		            _model.set(_data);
+		            paper.view.draw();
+	           	} else {
+	           		closeEditor();
+	           	}
+    		}).defer();
+    	}).throttle(500);
+    	
+        this.editor_$.find("input").bind("keyup change paste", onFieldChange);
+        this.editor_$.find(".Rk-Edit-Vocabulary").change(function() {
+        	var e = $(this),
+        		v = e.val();
+        	if (v) {
+        		_this.editor_$.find(".Rk-Edit-Title").val(e.find(":selected").text());
+        		_this.editor_$.find(".Rk-Edit-URI").val(v);
+        		onFieldChange();
+        	}
+        });
+        this.editor_$.find(".Rk-Edit-Direction").click(function() {
+			if (_this.renderer.isEditable()) {
+	        	_model.set({
+	        		from: _model.get("to"),
+	        		to: _model.get("from")
+	        	});
+	        	_this.draw();
+	       	} else {
+	       		closeEditor();
+	       	}
+        });
+        this.editor_$.find(".Rk-Edit-ColorPicker-Wrapper").hover(
+            function() { _this.editor_$.find(".Rk-Edit-ColorPicker").show(); },
+            function() { _this.editor_$.find(".Rk-Edit-ColorPicker").hide(); }
+        );
+        this.editor_$.find(".Rk-Edit-ColorPicker li").hover(
+            function() { _this.editor_$.find(".Rk-Edit-Color").css("background", $(this).attr("data-color")); },
+            function() { _this.editor_$.find(".Rk-Edit-Color").css("background", _model.get("color") || (_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color")); }
+        ).click(function() {
+			if (_this.renderer.isEditable()) {
+            	_model.set("color", $(this).attr("data-color"));
+            	paper.view.draw();
+            } else {
+	       		closeEditor();
+	       	}
+        });
+    }
+}
+
+Rkns.Renderer.EdgeEditor.prototype.redraw = function() {
+    var _coords = this.edge_representation.paper_coords;
+    Rkns.Renderer.Utils.drawEditBox(this.options, _coords, this.editor_block, 5, this.editor_$);
+    this.editor_$.show();
+    paper.view.draw();
+}
+
+Rkns.Renderer.EdgeEditor.prototype.destroy = function() {
+    this.editor_block.remove();
+    this.editor_$.detach();
+}
+
+/* */
+
+Rkns.Renderer.NodeEditButton = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.NodeEditButton.prototype._init = function() {
+    this.type = "Node-edit-button";
+    this.lastSectorInner = 0;
+}
+
+Rkns.Renderer.NodeEditButton.prototype.setSectorSize = function() {
+	var sectorInner = this.node_representation.circle_radius;
+	if (sectorInner !== this.lastSectorInner) {
+		if (this.sector) {
+			this.sector.destroy();
+		}
+		this.sector = Rkns.Renderer.Utils.sector(this, 1 + sectorInner, Rkns.Renderer._NODE_BUTTON_WIDTH + sectorInner, - 90, 30, 1, this.options.static_url+'img/edit.png', this.renkan.translate("Edit"));
+		this.lastSectorInner = sectorInner;
+	}
+}
+
+Rkns.Renderer.NodeEditButton.prototype.moveTo = function(_pos) {
+    this.sector.moveTo(_pos);
+}
+
+Rkns.Renderer.NodeEditButton.prototype.show = function() {
+    this.sector.show();
+}
+
+Rkns.Renderer.NodeEditButton.prototype.hide = function() {
+    this.sector.hide();
+}
+
+Rkns.Renderer.NodeEditButton.prototype.select = function() {
+    this.sector.select();
+}
+
+Rkns.Renderer.NodeEditButton.prototype.unselect = function(_newTarget) {
+    this.sector.unselect();
+    if (!_newTarget || (_newTarget !== this.node_representation && _newTarget.node_representation !== this.node_representation)) {
+        this.node_representation.unselect();
+    }
+}
+
+Rkns.Renderer.NodeEditButton.prototype.mouseup = function() {
+    if (!this.renderer.is_dragging) {
+        this.node_representation.openEditor();
+    }
+}
+
+Rkns.Renderer.NodeEditButton.prototype.destroy = function() {
+    this.sector.destroy();
+}
+
+/* */
+
+Rkns.Renderer.NodeRemoveButton = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.NodeRemoveButton.prototype._init = function() {
+    this.type = "Node-remove-button";
+    this.lastSectorInner = 0;
+}
+
+Rkns.Renderer.NodeRemoveButton.prototype.setSectorSize = function() {
+	var sectorInner = this.node_representation.circle_radius;
+	if (sectorInner !== this.lastSectorInner) {
+		if (this.sector) {
+			this.sector.destroy();
+		}
+		this.sector = Rkns.Renderer.Utils.sector(this, 1 + sectorInner, Rkns.Renderer._NODE_BUTTON_WIDTH + sectorInner, - 210, - 90, 1, this.options.static_url+'img/remove.png', this.renkan.translate("Remove"));
+		this.lastSectorInner = sectorInner;
+	}
+}
+
+Rkns.Renderer.NodeRemoveButton.prototype.moveTo = function(_pos) {
+    this.sector.moveTo(_pos);
+}
+
+Rkns.Renderer.NodeRemoveButton.prototype.show = function() {
+    this.sector.show();
+}
+
+Rkns.Renderer.NodeRemoveButton.prototype.hide = function() {
+    this.sector.hide();
+}
+
+Rkns.Renderer.NodeRemoveButton.prototype.select = function() {
+    this.sector.select();
+}
+
+Rkns.Renderer.NodeRemoveButton.prototype.unselect = function(_newTarget) {
+    this.sector.unselect();
+    if (!_newTarget || (_newTarget !== this.node_representation && _newTarget.node_representation !== this.node_representation)) {
+        this.node_representation.unselect();
+    }
+}
+
+Rkns.Renderer.NodeRemoveButton.prototype.mouseup = function() {
+    this.renderer.removeRepresentationsOfType("editor");
+    if (this.renderer.isEditable() && confirm(this.renkan.translate('Do you really wish to remove node ') + '"' + this.node_representation.model.get("title") + '"?')) {
+        this.project.removeNode(this.node_representation.model);
+    }
+}
+
+Rkns.Renderer.NodeRemoveButton.prototype.destroy = function() {
+    this.sector.destroy();
+}
+
+/* */
+
+Rkns.Renderer.NodeLinkButton = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.NodeLinkButton.prototype._init = function() {
+    this.type = "Node-link-button";
+    this.lastSectorInner = 0;
+}
+
+Rkns.Renderer.NodeLinkButton.prototype.setSectorSize = function() {
+	var sectorInner = this.node_representation.circle_radius;
+	if (sectorInner !== this.lastSectorInner) {
+		if (this.sector) {
+			this.sector.destroy();
+		}
+		this.sector = Rkns.Renderer.Utils.sector(this, 1 + sectorInner, Rkns.Renderer._NODE_BUTTON_WIDTH + sectorInner, 30, 150, 1, this.options.static_url+'img/link.png', this.renkan.translate("Link to another node"));
+		this.lastSectorInner = sectorInner;
+	}
+}
+
+Rkns.Renderer.NodeLinkButton.prototype.moveTo = function(_pos) {
+    this.sector.moveTo(_pos);
+}
+
+Rkns.Renderer.NodeLinkButton.prototype.show = function() {
+    this.sector.show();
+}
+
+Rkns.Renderer.NodeLinkButton.prototype.hide = function() {
+    this.sector.hide();
+}
+
+Rkns.Renderer.NodeLinkButton.prototype.select = function() {
+    this.sector.select();
+}
+
+Rkns.Renderer.NodeLinkButton.prototype.unselect = function(_newTarget) {
+    this.sector.unselect();
+    if (!_newTarget || (_newTarget !== this.node_representation && _newTarget.node_representation !== this.node_representation)) {
+        this.node_representation.unselect();
+    }
+}
+
+Rkns.Renderer.NodeLinkButton.prototype.destroy = function() {
+    this.sector.destroy();
+}
+
+/* */
+
+Rkns.Renderer.EdgeEditButton = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.EdgeEditButton.prototype._init = function() {
+    this.type = "Edge-edit-button";
+    this.sector = Rkns.Renderer.Utils.sector(this, Rkns.Renderer._EDGE_BUTTON_INNER, Rkns.Renderer._EDGE_BUTTON_OUTER, - 90, 90, 1, this.options.static_url+'img/edit.png', this.renkan.translate("Edit"));
+}
+
+Rkns.Renderer.EdgeEditButton.prototype.moveTo = function(_pos) {
+    this.sector.moveTo(_pos);
+}
+
+Rkns.Renderer.EdgeEditButton.prototype.show = function() {
+    this.sector.show();
+}
+
+Rkns.Renderer.EdgeEditButton.prototype.hide = function() {
+    this.sector.hide();
+}
+
+Rkns.Renderer.EdgeEditButton.prototype.select = function() {
+    this.sector.select();
+}
+
+Rkns.Renderer.EdgeEditButton.prototype.unselect = function(_newTarget) {
+    this.sector.unselect();
+    if (!_newTarget || (_newTarget !== this.edge_representation && _newTarget.edge_representation !== this.edge_representation)) {
+        this.edge_representation.unselect();
+    }
+}
+
+Rkns.Renderer.EdgeEditButton.prototype.mouseup = function() {
+    if (!this.renderer.is_dragging) {
+        this.edge_representation.openEditor();
+    }
+}
+
+Rkns.Renderer.EdgeEditButton.prototype.destroy = function() {
+    this.sector.destroy();
+}
+
+/* */
+
+Rkns.Renderer.EdgeRemoveButton = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.EdgeRemoveButton.prototype._init = function() {
+    this.type = "Edge-remove-button";
+    this.sector = Rkns.Renderer.Utils.sector(this, Rkns.Renderer._EDGE_BUTTON_INNER, Rkns.Renderer._EDGE_BUTTON_OUTER, - 270, -90, 1, this.options.static_url+'img/remove.png', this.renkan.translate("Remove"));
+}
+Rkns.Renderer.EdgeRemoveButton.prototype.moveTo = function(_pos) {
+    this.sector.moveTo(_pos);
+}
+
+Rkns.Renderer.EdgeRemoveButton.prototype.show = function() {
+    this.sector.show();
+}
+
+Rkns.Renderer.EdgeRemoveButton.prototype.hide = function() {
+    this.sector.hide();
+}
+
+Rkns.Renderer.EdgeRemoveButton.prototype.select = function() {
+    this.sector.select();
+}
+
+Rkns.Renderer.EdgeRemoveButton.prototype.unselect = function(_newTarget) {
+    this.sector.unselect();
+    if (!_newTarget || (_newTarget !== this.edge_representation && _newTarget.edge_representation !== this.edge_representation)) {
+        this.edge_representation.unselect();
+    }
+}
+
+Rkns.Renderer.EdgeRemoveButton.prototype.mouseup = function() {
+    this.renderer.removeRepresentationsOfType("editor");
+    if (this.renderer.isEditable() && confirm(this.renkan.translate('Do you really wish to remove edge ') + '"' + this.edge_representation.model.get("title") + '"?')) {
+        this.project.removeEdge(this.edge_representation.model);
+    }
+}
+
+Rkns.Renderer.EdgeRemoveButton.prototype.destroy = function() {
+    this.sector.destroy();
+}
+
+/* */
+
+Rkns.Renderer.MiniFrame = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.MiniFrame.prototype.paperShift = function(_delta) {
+	this.renderer.offset = this.renderer.offset.subtract(_delta.divide(this.renderer.minimap.scale).multiply(this.renderer.scale));
+    this.renderer.redraw();
+}
+
+Rkns.Renderer.MiniFrame.prototype.mouseup = function(_delta) {
+	this.renderer.click_target = null;
+    this.renderer.is_dragging = false;
+}
+
+/* */
+
+Rkns.Renderer.Scene = function(_renkan) {
+    this.renkan = _renkan;
+    this.$ = Rkns.$(".Rk-Render");
+    this.representations = [];
+    this.$.html(this.template(_renkan));
+    this.onStatusChange();
+    this.canvas_$ = this.$.find(".Rk-Canvas");
+    this.editor_$ = this.$.find(".Rk-Editor");
+    this.notif_$ = this.$.find(".Rk-Notifications");
+    paper.setup(this.canvas_$[0]);
+    this.scale = 1;
+    this.offset = paper.view.center;
+    this.totalScroll = 0;
+    this.click_target = null;
+    this.selected_target = null;
+    this.edge_layer = new paper.Layer();
+    this.node_layer = new paper.Layer();
+    this.buttons_layer = new paper.Layer();
+    
+    if (_renkan.options.show_minimap) {
+	    this.minimap = {
+	    	background_layer: new paper.Layer(),
+	    	edge_layer: new paper.Layer(),
+	    	node_layer: new paper.Layer(),
+	    	node_group: new paper.Group(),
+	    	size: new paper.Size( _renkan.options.minimap_width, _renkan.options.minimap_height )
+	    }
+	    
+	    this.minimap.background_layer.activate();
+	    this.minimap.topleft = paper.view.bounds.bottomRight.subtract(this.minimap.size);
+	    this.minimap.rectangle = new paper.Path.Rectangle(this.minimap.topleft.subtract([2,2]), this.minimap.size.add([4,4]));
+	    this.minimap.rectangle.fillColor = _renkan.options.minimap_background_color;
+	    this.minimap.rectangle.strokeColor = _renkan.options.minimap_border_color;
+	    this.minimap.rectangle.strokeWidth = 4;
+	    this.minimap.offset = new paper.Point(this.minimap.size.divide(2));
+	    this.minimap.scale = .1;
+	    
+	    this.minimap.node_layer.activate();
+	    this.minimap.cliprectangle = new paper.Path.Rectangle(this.minimap.topleft, this.minimap.size);
+	    this.minimap.node_group.addChild(this.minimap.cliprectangle);
+	    this.minimap.node_group.clipped = true;
+	    this.minimap.miniframe = new paper.Path.Rectangle(this.minimap.topleft, this.minimap.size);
+	    this.minimap.node_group.addChild(this.minimap.miniframe);
+	    this.minimap.miniframe.fillColor = '#c0c0ff';
+	    this.minimap.miniframe.opacity = .3;
+	    this.minimap.miniframe.strokeColor = '#000080';
+	    this.minimap.miniframe.strokeWidth = 3;
+	    this.minimap.miniframe.__representation = new Rkns.Renderer.MiniFrame(this, null);
+    }
+    
+    this.bundles = [];
+    this.click_mode = false;
+    var _tool = new paper.Tool(),
+        _this = this,
+        _allowScroll = true;
+    
+    _tool.minDistance = Rkns.Renderer._MIN_DRAG_DISTANCE;
+    _tool.onMouseMove = function(_event) {
+        _this.onMouseMove(_event);
+    }
+    _tool.onMouseDown = function(_event) {
+        _this.onMouseDown(_event);
+    }
+    _tool.onMouseDrag = function(_event) {
+        _this.onMouseDrag(_event);
+    }
+    this.canvas_$.mouseup(function(_event) {
+        _this.onMouseUp(_event);
+    });
+    this.canvas_$.mousewheel(function(_event, _delta) {
+        if (_allowScroll) {
+        	_this.onScroll(_event, _delta);
+        }
+    });
+    this.canvas_$.dblclick(function(_event) {
+        _this.onDoubleClick(_event);
+    });
+    this.canvas_$.on("dragover", function(_event) {
+    	_event.stopPropagation();
+    	_event.preventDefault();
+    });
+    this.canvas_$.on("dragenter", function(_event) {
+    	_allowScroll = false;
+    	_event.stopPropagation();
+    	_event.preventDefault();
+    });
+    this.canvas_$.on("dragleave", function(_event) {
+    	_allowScroll = true;
+    	_event.stopPropagation();
+    	_event.preventDefault();
+    });
+    this.canvas_$.on("drop", function(_event) {
+    	_event.stopPropagation();
+    	_event.preventDefault();
+    	_allowScroll = true;
+    	if (!_this.isEditable()) {
+    		return;
+    	}
+    	var res = {};
+    	Rkns._(_event.originalEvent.dataTransfer.types).each(function(t) {
+    		try {
+    			res[t] = _event.originalEvent.dataTransfer.getData(t);
+    		} catch(e) {}
+    	});
+		var text = _event.originalEvent.dataTransfer.getData("Text");
+		if (typeof text === "string") {
+			switch(text[0]) {
+    			case "{":
+    			case "[":
+    				try {
+    					var data = JSON.parse(text);
+    					_(res).extend(data);
+    				}
+    				catch(e) {
+    					if (!res["text/plain"]) {
+    						res["text/plain"] = text;
+    					}
+    				}
+				break;
+				case "<":
+					if (!res["text/html"]) {
+						res["text/html"] = text;
+					}
+				break;
+				default:
+					if (!res["text/plain"]) {
+						res["text/plain"] = text;
+					}
+    		}
+		}
+		var url = _event.originalEvent.dataTransfer.getData("URL");
+		if (url && !res["text/uri-list"]) {
+			res["text/uri-list"] = url;
+		}
+		if (res["text/json"] || res["application/json"]) {
+			try {
+				var data = JSON.parse(res["text/json"] || res["application/json"]);
+				_(res).extend(data);
+			}
+			catch(e) {}
+		}
+    	var newNode = {};
+    	switch(res["text/x-iri-specific-site"]) {
+    		case "twitter":
+    			var snippet = Rkns.$('<div>').html(res["text/x-iri-selected-html"]),
+    				tweetdiv = snippet.find(".tweet")
+    			newNode.title = _renkan.translate("Tweet by ") + tweetdiv.attr("data-name");
+    			newNode.uri = "http://twitter.com/" + tweetdiv.attr("data-screen-name") + "/status/" + tweetdiv.attr("data-tweet-id");
+    			newNode.image = tweetdiv.find(".avatar").attr("src");
+    			newNode.description = tweetdiv.find(".js-tweet-text:first").text();
+    		break;
+    		case "google":
+    			var snippet = Rkns.$('<div>').html(res["text/x-iri-selected-html"]);
+    			newNode.title = snippet.find("h3:first").text().trim();
+    			newNode.uri = snippet.find("h3 a").attr("href");
+    			newNode.description = snippet.find(".st:first").text().trim();
+    		break;
+    		case undefined:
+	    	default:
+		    	if (res["text/x-iri-source-uri"]) {
+		    		newNode.uri = res["text/x-iri-source-uri"];
+		    	}
+		    	if (res["text/plain"] || res["text/x-iri-selected-text"]) {
+		    		newNode.description = (res["text/plain"] || res["text/x-iri-selected-text"]).replace(/[\s\n]+/gm,' ').trim();
+		    	}
+		    	if (res["text/html"] || res["text/x-iri-selected-html"]) {
+		    		var snippet = Rkns.$('<div>').html(res["text/html"] || res["text/x-iri-selected-html"]);
+		    		newNode.image = snippet.find("img").attr("src") || '';
+		    		newNode.uri = snippet.find("a").attr("href") || newNode.uri;
+		    		newNode.title = snippet.find("[title]").attr("title");
+		    		newNode.description = snippet.text().replace(/[\s\n]+/gm,' ').trim();
+		    	}
+		    	if (res["text/uri-list"]) {
+		    		newNode.uri = res["text/uri-list"];
+		    	}
+		    	if (res["text/x-moz-url"] && !newNode.title) {
+		    		newNode.title = (res["text/x-moz-url"].split("\n")[1] || "").trim();
+		    		if (newNode.title === newNode.uri) {
+		    			newNode.title = false;
+		    		}
+		    	}
+		    	if (res["text/x-iri-source-title"] && !newNode.title) {
+		    		newNode.title = res["text/x-iri-source-title"];
+		    	}
+		    	if (res["text/html"] || res["text/x-iri-selected-html"]) {
+		    		newNode.image = snippet.find("[data-image]").attr("data-image") || newNode.image;
+		    		newNode.uri = snippet.find("[data-uri]").attr("data-uri") || newNode.uri;
+		    		newNode.title = snippet.find("[data-title]").attr("data-title") || newNode.title;
+		    		newNode.description = snippet.find("[data-description]").attr("data-description") || newNode.description;
+		    	}
+    	}
+    	var fields = ["title", "description", "uri", "image"];
+    	for (var i = 0; i < fields.length; i++) {
+    		var f = fields[i];
+    		if (res["text/x-iri-" + f] || res[f]) {
+    			newNode[f] = res["text/x-iri-" + f] || res[f];
+    		}
+    	}
+    	if (newNode.title || newNode.description || newNode.uri) {
+    		var _off = _this.canvas_$.offset(),
+            _point = new paper.Point([
+                _event.originalEvent.pageX - _off.left,
+                _event.originalEvent.pageY - _off.top
+            ]),
+            _coords = _this.toModelCoords(_point),
+            _data = {
+                id: Rkns.Utils.getUID('node'),
+                created_by: _this.renkan.current_user,
+                uri: newNode.uri || "",
+                title: newNode.title || _this.renkan.translate("Dragged resource"),
+                description: newNode.description || "",
+                image: newNode.image || "",
+                color: newNode.color || undefined,
+                position: {
+                    x: _coords.x,
+                    y: _coords.y
+                }
+            };
+        	var _node = _this.renkan.project.addNode(_data);
+            _this.getRepresentationByModel(_node).openEditor();
+    	}
+    })
+    this.editor_$.find(".Rk-ZoomOut").click(function() {
+    	var _newScale = _this.scale * Math.SQRT1_2,
+    		_offset = new paper.Point([
+	            _this.canvas_$.width(),
+	            _this.canvas_$.height()
+	        ]).multiply( .5 * ( 1 - Math.SQRT1_2 ) ).add(_this.offset.multiply( Math.SQRT1_2 ));
+        _this.setScale( _newScale, _offset );
+    });
+    this.editor_$.find(".Rk-ZoomIn").click(function() {
+    	var _newScale = _this.scale * Math.SQRT2,
+    		_offset = new paper.Point([
+	            _this.canvas_$.width(),
+	            _this.canvas_$.height()
+	        ]).multiply( .5 * ( 1 - Math.SQRT2 ) ).add(_this.offset.multiply( Math.SQRT2 ));
+        _this.setScale( _newScale, _offset );
+    });
+    this.$.find(".Rk-CurrentUser").mouseenter(
+        function() { _this.$.find(".Rk-UserList").slideDown() }
+    );
+    this.$.find(".Rk-Users").mouseleave(
+        function() { _this.$.find(".Rk-UserList").slideUp(); }
+    );
+    this.$.find(".Rk-FullScreen-Button").click(function() {
+        var _isFull = document.fullScreen || document.mozFullScreen || document.webkitIsFullScreen,
+            _el = _this.renkan.$[0],
+            _requestMethods = ["requestFullScreen","mozRequestFullScreen","webkitRequestFullScreen"],
+            _cancelMethods = ["cancelFullScreen","mozCancelFullScreen","webkitCancelFullScreen"];
+        if (_isFull) {
+            for (var i = 0; i < _cancelMethods.length; i++) {
+                if (typeof document[_cancelMethods[i]] === "function") {
+                    document[_cancelMethods[i]]();
+                    break;
+                }
+            }
+        } else {
+            for (var i = 0; i < _requestMethods.length; i++) {
+                if (typeof _el[_requestMethods[i]] === "function") {
+                    _el[_requestMethods[i]]();
+                    break;
+                }
+            }
+        }
+    });
+    this.$.find(".Rk-AddNode-Button").click(function() {
+        if (_this.click_mode === Rkns.Renderer._CLICKMODE_ADDNODE) {
+            _this.click_mode = false;
+            _this.notif_$.hide();
+        } else {
+            _this.click_mode = Rkns.Renderer._CLICKMODE_ADDNODE;
+            _this.notif_$.text(_renkan.translate("Click on the background canvas to add a node")).fadeIn();
+        }
+    });
+    this.$.find(".Rk-AddEdge-Button").click(function() {
+        if (_this.click_mode === Rkns.Renderer._CLICKMODE_STARTEDGE || _this.click_mode === Rkns.Renderer._CLICKMODE_ENDEDGE) {
+            _this.click_mode = false;
+            _this.notif_$.hide();
+        } else {
+            _this.click_mode = Rkns.Renderer._CLICKMODE_STARTEDGE;
+            _this.notif_$.text(_renkan.translate("Click on a first node to start the edge")).fadeIn();
+        }
+    });
+    this.$.find(".Rk-Bookmarklet-Button")
+	    .attr("href","javascript:" + Rkns.Renderer._BOOKMARKLET_CODE(_renkan))
+		.click(function(){
+	    	_this.notif_$
+	    		.text(_renkan.translate("Drag this button to your bookmark bar. When on a third-party website, click it to enable drag-and-drop from the website to Renkan."))
+	    		.fadeIn()
+	    		.delay(5000)
+	    		.fadeOut();
+			return false;
+	    });
+    this.$.find(".Rk-TopBar-Button").mouseover(function() {
+        Rkns.$(this).find(".Rk-TopBar-Tooltip").show();
+    }).mouseout(function() {
+        Rkns.$(this).find(".Rk-TopBar-Tooltip").hide();
+    });
+    this.$.find(".Rk-Fold-Bins").click(function() {
+    	var bins = _renkan.$.find(".Rk-Bins");
+    	if (bins.offset().left < 0) {
+    		bins.animate({left: 0},250);
+    		_this.$.animate({left: 300},250,function() {
+    			var w = _this.$.width();
+    			paper.view.viewSize = new paper.Size([w, _this.canvas_$.height()]);
+    		});
+    		$(this).html("&laquo;");
+    	} else {
+    		bins.animate({left: -300},250);
+    		_this.$.animate({left: 0},250,function() {
+    			var w = _this.$.width();
+    			paper.view.viewSize = new paper.Size([w, _this.canvas_$.height()]);
+    		});
+    		$(this).html("&raquo;");
+    	}
+    });
+    
+    paper.view.onResize = function(_event) {
+    	_this.offset = _this.offset.add(_event.delta.divide(2));
+    	if (_this.minimap) {
+	        _this.minimap.topleft = paper.view.bounds.bottomRight.subtract(_this.minimap.size)
+	        _this.minimap.rectangle.fitBounds(_this.minimap.topleft.subtract([2,2]), _this.minimap.size.add([4,4]));
+	        _this.minimap.cliprectangle.fitBounds(_this.minimap.topleft, _this.minimap.size);
+        }
+        _this.redraw();
+    }
+    
+    var _thRedraw = Rkns._.throttle(function() {
+        _this.redraw();
+    },50);
+    
+    this.addRepresentations("Node", this.renkan.project.get("nodes"));
+    this.addRepresentations("Edge", this.renkan.project.get("edges"));
+    this.renkan.project.on("change:title", function() {
+        _this.$.find(".Rk-PadTitle").val(_renkan.project.get("title"));
+    });
+    
+    this.$.find(".Rk-PadTitle").on("keyup input paste", function() {
+        _renkan.project.set({"title": $(this).val()});
+    })
+    
+    this.renkan.project.get("users").each(function(_user) {
+        _this.addUser(_user);
+    });
+    
+    this.renkan.project.on("add:users", function(_user) {
+        _this.addUser(_user);
+    });
+    this.renkan.project.on("add:nodes", function(_node) {
+        _this.addRepresentation("Node", _node);
+        _thRedraw();
+    });
+    this.renkan.project.on("add:edges", function(_edge) {
+        _this.addRepresentation("Edge", _edge);
+        _thRedraw();
+    });
+    this.renkan.project.on("change:title", function(_model, _title) {
+        var el = $(".Rk-PadTitle");
+        if (el.is("input")) {
+            if (el.val() !== _title) {
+                el.val(_title);
+            }
+        } else {
+            el.text(_title);
+        }
+    });
+    
+    this.redraw();
+    
+    if (this.minimap) {
+	    window.setInterval(function() {
+	    	_this.rescaleMinimap()
+	    }, 2000);
+    }
+}
+
+Rkns.Renderer.Scene.prototype.template = Rkns._.template(
+    '<% if (options.show_top_bar) { %><div class="Rk-TopBar"><% if (!options.editor_mode) { %><h2 class="Rk-PadTitle"><%- project.get("title") || translate("Untitled project")%></h2>'
+    + '<% } else { %><input type="text" class="Rk-PadTitle" value="<%- project.get("title") || "" %>" placeholder="<%-translate("Untitled project")%>" /><% } %>'
+    + '<div class="Rk-Users"><div class="Rk-CurrentUser"><span class="Rk-CurrentUser-Color"></span><span class="Rk-CurrentUser-Name">&lt;unknown user&gt;</span></div><ul class="Rk-UserList"></ul></div>'
+    + '<div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-FullScreen-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents"><%-translate("Full Screen")%></div></div></div>'
+    + '<% if (options.editor_mode) { %>'
+    + '<div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-AddNode-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents"><%-translate("Add Node")%></div></div></div>'
+    + '<div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-AddEdge-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents"><%-translate("Add Edge")%></div></div></div>'
+    + '<div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-Save-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents"> </div></div></div>'
+    + '<div class="Rk-TopBar-Separator"></div><a class="Rk-TopBar-Button Rk-Bookmarklet-Button" href="#"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents">'
+    + '<%-translate("Renkan \'Drag-to-Add\' bookmarklet")%></div></div></a>'
+    + '<div class="Rk-TopBar-Separator"></div></div>'
+    + '<% } } %>'
+    + '<div class="Rk-Editing-Space<% if (!options.show_top_bar) { %> Rk-Editing-Space-Full<% } %>"><canvas class="Rk-Canvas" resize></canvas><div class="Rk-Editor"><div class="Rk-Notifications"></div>'
+    + '<% if (options.show_bins) { %><div class="Rk-Fold-Bins">&laquo;</div><% } %>'
+    + '<div class="Rk-ZoomButtons"><div class="Rk-ZoomIn" title="<%-translate("Zoom In")%>"></div><div class="Rk-ZoomOut" title="<%-translate("Zoom Out")%>"></div></div>'
+    + '</div></div>'
+);
+
+Rkns.Renderer.Scene.prototype.addToBundles = function(_edgeRepr) {
+    var _bundle = Rkns._(this.bundles).find(function(_bundle) {
+        return ( 
+            ( _bundle.from === _edgeRepr.from_representation && _bundle.to === _edgeRepr.to_representation )
+            || ( _bundle.from === _edgeRepr.to_representation && _bundle.to === _edgeRepr.from_representation )
+        );
+    });
+    if (typeof _bundle !== "undefined") {
+        _bundle.edges.push(_edgeRepr)
+    } else {
+        _bundle = {
+            from: _edgeRepr.from_representation,
+            to: _edgeRepr.to_representation,
+            edges: [ _edgeRepr ],
+            getPosition: function(_er) {
+                var _dir = (_er.from_representation === this.from) ? 1 : -1;
+                return _dir * ( Rkns._(this.edges).indexOf(_er) - (this.edges.length - 1) / 2 );
+            }
+        }
+        this.bundles.push(_bundle);
+    }
+    return _bundle;
+}
+
+Rkns.Renderer.Scene.prototype.isEditable = function() {
+	return (this.renkan.options.editor_mode && !this.renkan.read_only)
+}
+
+Rkns.Renderer.Scene.prototype.onStatusChange = function() {
+	var savebtn = this.$.find(".Rk-Save-Button"),
+		tip = savebtn.find(".Rk-TopBar-Tooltip-Contents");
+	if (this.renkan.read_only) {
+		savebtn.removeClass("disabled Rk-Save-Online").addClass("Rk-Save-ReadOnly");
+		tip.text(this.renkan.translate("Connection lost"));
+	} else {
+		if (this.renkan.options.snapshot_mode) {
+			savebtn.removeClass("Rk-Save-ReadOnly Rk-Save-Online");
+			tip.text(this.renkan.translate("Archive Project"));
+		} else {
+			savebtn.removeClass("disabled Rk-Save-ReadOnly").addClass("Rk-Save-Online");
+			tip.text(this.renkan.translate("Auto-save enabled"));
+		}
+	}
+}
+
+Rkns.Renderer.Scene.prototype.setScale = function(_newScale, _offset) {
+	if (_newScale > Rkns.Renderer._MIN_SCALE && _newScale < Rkns.Renderer._MAX_SCALE) {
+	    this.scale = _newScale;
+	    if (_offset) {
+	    	this.offset = _offset
+	    }
+	    this.redraw();
+    }
+}
+
+Rkns.Renderer.Scene.prototype.autoScale = function() {
+    var nodes = this.renkan.project.get("nodes")
+    if (nodes.length > 1) {
+        var _xx = nodes.map(function(_node) { return _node.get("position").x }),
+            _yy = nodes.map(function(_node) { return _node.get("position").y }),
+            _minx = Math.min.apply(Math, _xx),
+            _miny = Math.min.apply(Math, _yy),
+            _maxx = Math.max.apply(Math, _xx),
+            _maxy = Math.max.apply(Math, _yy);
+        var _scale = Math.max(Rkns.Renderer._MIN_SCALE, Math.min(Rkns.Renderer._MAX_SCALE, (paper.view.size.width - 2 * Rkns.Renderer._AUTOSCALE_MARGIN) / (_maxx - _minx), (paper.view.size.height - 2 * Rkns.Renderer._AUTOSCALE_MARGIN) / (_maxy - _miny)));
+		this.setScale(_scale, paper.view.center.subtract(new paper.Point([(_maxx + _minx) / 2, (_maxy + _miny) / 2]).multiply(_scale)));
+    }
+    if (nodes.length === 1) {
+        this.setScale(1, paper.view.center.subtract(new paper.Point([nodes.at(0).get("position").x, nodes.at(0).get("position").y])));
+    }
+}
+
+Rkns.Renderer.Scene.prototype.redrawMiniframe = function() {
+	var topleft = this.toMinimapCoords(this.toModelCoords(new paper.Point([0,0]))),
+		bottomright = this.toMinimapCoords(this.toModelCoords(paper.view.bounds.bottomRight));
+	this.minimap.miniframe.fitBounds(topleft, bottomright);
+}
+
+Rkns.Renderer.Scene.prototype.rescaleMinimap = function() {
+    var nodes = this.renkan.project.get("nodes")
+    if (nodes.length > 1) {
+        var _xx = nodes.map(function(_node) { return _node.get("position").x }),
+            _yy = nodes.map(function(_node) { return _node.get("position").y }),
+            _minx = Math.min.apply(Math, _xx),
+            _miny = Math.min.apply(Math, _yy),
+            _maxx = Math.max.apply(Math, _xx),
+            _maxy = Math.max.apply(Math, _yy);
+        var _scale = Math.min(
+        	this.scale * .8 * this.renkan.options.minimap_width / paper.view.bounds.width,
+        	this.scale * .8 * this.renkan.options.minimap_height / paper.view.bounds.height,
+        	( this.renkan.options.minimap_width - 2 * Rkns.Renderer._MINIMAP_MARGIN ) / (_maxx - _minx),
+        	( this.renkan.options.minimap_height - 2 * Rkns.Renderer._MINIMAP_MARGIN ) / (_maxy - _miny)
+    	);
+        this.minimap.offset = this.minimap.size.divide(2).subtract(new paper.Point([(_maxx + _minx) / 2, (_maxy + _miny) / 2]).multiply(_scale));
+        this.minimap.scale = _scale;
+    }
+    if (nodes.length === 1) {
+    	this.minimap.scale = .1;
+        this.minimap.offset = this.minimap.size.divide(2).subtract(new paper.Point([nodes.at(0).get("position").x, nodes.at(0).get("position").y]).multiply(this.minimap.scale));
+    }
+    this.redraw();
+}
+
+Rkns.Renderer.Scene.prototype.toPaperCoords = function(_point) {
+    return _point.multiply(this.scale).add(this.offset);
+}
+
+Rkns.Renderer.Scene.prototype.toMinimapCoords = function(_point) {
+    return _point.multiply(this.minimap.scale).add(this.minimap.offset).add(this.minimap.topleft);
+}
+
+Rkns.Renderer.Scene.prototype.toModelCoords = function(_point) {
+    return _point.subtract(this.offset).divide(this.scale);
+}
+
+Rkns.Renderer.Scene.prototype.addRepresentation = function(_type, _model) {
+    var _repr = new Rkns.Renderer[_type](this, _model);
+    this.representations.push(_repr);
+    return _repr;
+}
+
+Rkns.Renderer.Scene.prototype.addRepresentations = function(_type, _collection) {
+    var _this = this;
+    _collection.forEach(function(_model) {
+        _this.addRepresentation(_type, _model);
+    });
+}
+
+Rkns.Renderer.Scene.prototype.userTemplate = Rkns._.template(
+    '<li class="Rk-User"><span class="Rk-UserColor" style="background:<%=background%>;"></span><%=name%></li>'
+);
+
+Rkns.Renderer.Scene.prototype.addUser = function(_user) {
+    if (_user.get("_id") === this.renkan.current_user) {
+        this.$.find(".Rk-CurrentUser-Name").text(_user.get("title"));
+        this.$.find(".Rk-CurrentUser-Color").css("background", _user.get("color"));
+    } else {
+        this.$.find(".Rk-UserList").append(
+            Rkns.$(
+                this.userTemplate({
+                    name: _user.get("title"),
+                    background: _user.get("color")
+                })
+            )
+        );
+    }
+}
+
+Rkns.Renderer.Scene.prototype.removeRepresentation = function(_representation) {
+    _representation.destroy();
+    this.representations = Rkns._(this.representations).reject(
+        function(_repr) {
+            return _repr == _representation
+        }
+    );
+}
+
+Rkns.Renderer.Scene.prototype.getRepresentationByModel = function(_model) {
+    return Rkns._(this.representations).find(function(_repr) {
+        return _repr.model === _model;
+    });
+}
+
+Rkns.Renderer.Scene.prototype.removeRepresentationsOfType = function(_type) {
+    var _representations = Rkns._(this.representations).filter(function(_repr) {
+            return _repr.type == _type;
+        }),
+        _this = this;
+    Rkns._(_representations).each(function(_repr) {
+        _this.removeRepresentation(_repr);
+    });
+}
+
+Rkns.Renderer.Scene.prototype.highlightModel = function(_model) {
+    var _repr = this.getRepresentationByModel(_model);
+    if (_repr) {
+        _repr.highlight();
+    }
+}
+
+Rkns.Renderer.Scene.prototype.unhighlightAll = function(_model) {
+    Rkns._(this.representations).each(function(_repr) {
+        _repr.unhighlight();
+    });
+}
+
+Rkns.Renderer.Scene.prototype.redraw = function() {
+    Rkns._(this.representations).each(function(_representation) {
+    	_representation.redraw(true);
+    });
+    if (this.minimap) {
+    	this.redrawMiniframe();
+    }
+    paper.view.draw();
+}
+
+Rkns.Renderer.Scene.prototype.addTempEdge = function(_from, _point) {
+    var _tmpEdge = this.addRepresentation("TempEdge",null);
+    _tmpEdge.end_pos = _point;
+    _tmpEdge.from_representation = _from;
+    _tmpEdge.redraw();
+    this.click_target = _tmpEdge;
+}
+
+Rkns.Renderer.Scene.prototype.findTarget = function(_hitResult) {
+    if (_hitResult && typeof _hitResult.item.__representation !== "undefined") {
+        var _newTarget = _hitResult.item.__representation;
+        if (this.selected_target !== _hitResult.item.__representation) {
+            if (this.selected_target) {
+                this.selected_target.unselect(_newTarget);
+            }
+            _newTarget.select(this.selected_target);
+            this.selected_target = _newTarget;
+        }
+    } else {
+        if (this.selected_target) {
+            this.selected_target.unselect(null);
+        }
+        this.selected_target = null;
+    }
+}
+
+Rkns.Renderer.Scene.prototype.paperShift = function(_delta) {
+	this.offset = this.offset.add(_delta);
+    this.redraw();
+}
+
+Rkns.Renderer.Scene.prototype.onMouseMove = function(_event) {
+    var _hitResult = paper.project.hitTest(_event.point);
+    if (this.is_dragging) {
+        if (this.click_target && typeof this.click_target.paperShift === "function") {
+            this.click_target.paperShift(_event.delta);
+        } else {
+            this.paperShift(_event.delta);
+        }
+    } else {
+        this.findTarget(_hitResult);
+    }
+}
+
+Rkns.Renderer.Scene.prototype.onMouseDown = function(_event) {
+    if (!this.click_target || this.click_target.type !== "temp-edge") {
+        this.removeRepresentationsOfType("editor");
+        this.is_dragging = false;
+        var _hitResult = paper.project.hitTest(_event.point);
+        if (this.isEditable() && _hitResult && typeof _hitResult.item.__representation !== "undefined") {
+            this.click_target = _hitResult.item.__representation;
+            if (this.click_target.type === "Node-link-button") {
+                this.removeRepresentationsOfType("editor");
+                this.addTempEdge(this.click_target.node_representation, _event.point);
+            }
+        } else {
+            this.click_target = null;
+            if (this.isEditable() && this.click_mode === Rkns.Renderer._CLICKMODE_ADDNODE) {
+                var _coords = this.toModelCoords(_event.point),
+                    _data = {
+                        id: Rkns.Utils.getUID('node'),
+                        created_by: this.renkan.current_user,
+                        position: {
+                            x: _coords.x,
+                            y: _coords.y
+                        }
+                    };
+                    _node = this.renkan.project.addNode(_data);
+                this.getRepresentationByModel(_node).openEditor();
+            }
+        }
+    }
+    if (this.click_mode) {
+        if (this.isEditable() && this.click_mode === Rkns.Renderer._CLICKMODE_STARTEDGE && this.click_target && this.click_target.type === "Node") {
+            this.removeRepresentationsOfType("editor");
+            this.addTempEdge(this.click_target, _event.point);
+            this.click_mode = Rkns.Renderer._CLICKMODE_ENDEDGE;
+            this.notif_$.fadeOut(function() {
+                Rkns.$(this).html(_renkan.translate("Click on a second node to complete the edge")).fadeIn();
+            });
+        } else {
+            this.notif_$.hide();
+            this.click_mode = false;
+        }
+    }
+}
+
+Rkns.Renderer.Scene.prototype.onMouseDrag = function(_event) {
+    this.is_dragging = true;
+    this.onMouseMove(_event);
+}
+
+Rkns.Renderer.Scene.prototype.onMouseUp = function(_event) {
+    if (this.click_target) {
+        var _off = this.canvas_$.offset();
+        this.click_target.mouseup(
+            {
+                point: new paper.Point([
+                    _event.pageX - _off.left,
+                    _event.pageY - _off.top
+                ])
+            }
+        );
+    } else {
+        this.click_target = null;
+        this.is_dragging = false;
+    }
+}
+
+Rkns.Renderer.Scene.prototype.onScroll = function(_event, _scrolldelta) {
+    this.totalScroll += _scrolldelta;
+    if (Math.abs(this.totalScroll) >= 1) {
+        var _off = this.canvas_$.offset(),
+            _delta = new paper.Point([
+                _event.pageX - _off.left,
+                _event.pageY - _off.top
+            ]).subtract(this.offset).multiply( Math.SQRT2 - 1 );
+        if (this.totalScroll > 0) {
+        	this.setScale( this.scale * Math.SQRT2, this.offset.subtract(_delta) );
+        } else {
+        	this.setScale( this.scale * Math.SQRT1_2, this.offset.add(_delta.divide(Math.SQRT2)));
+        }
+        this.totalScroll = 0;
+    }
+}
+
+Rkns.Renderer.Scene.prototype.onDoubleClick = function(_event) {
+    if (!this.isEditable()) {
+        return;
+    }
+    var _off = this.canvas_$.offset(),
+        _point = new paper.Point([
+            _event.pageX - _off.left,
+            _event.pageY - _off.top
+        ]);
+    var _hitResult = paper.project.hitTest(_point);
+    if (this.isEditable() && (!_hitResult || typeof _hitResult.item.__representation === "undefined")) {
+        var _coords = this.toModelCoords(_point),
+            _data = {
+                id: Rkns.Utils.getUID('node'),
+                created_by: this.renkan.current_user,
+                position: {
+                    x: _coords.x,
+                    y: _coords.y
+                }
+            };
+            _node = this.renkan.project.addNode(_data);
+            this.getRepresentationByModel(_node).openEditor();
+    }
+    paper.view.draw();
+}
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/lib/backbone-relational.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/integ/renkan/lib/backbone-relational.js	Wed Apr 03 18:56:34 2013 +0200
@@ -0,0 +1,1687 @@
+/**
+ * Backbone-relational.js 0.6.0
+ * (c) 2011 Paul Uithol
+ * 
+ * Backbone-relational may be freely distributed under the MIT license; see the accompanying LICENSE.txt.
+ * For details and documentation: https://github.com/PaulUithol/Backbone-relational.
+ * Depends on Backbone (and thus on Underscore as well): https://github.com/documentcloud/backbone.
+ */
+( function( undefined ) {
+	"use strict";
+	
+	/**
+	 * CommonJS shim
+	 **/
+	var _, Backbone, exports;
+	if ( typeof window === 'undefined' ) {
+		_ = require( 'underscore' );
+		Backbone = require( 'backbone' );
+		exports = module.exports = Backbone;
+	}
+	else {
+		_ = window._;
+		Backbone = window.Backbone;
+		exports = window;
+	}
+
+	Backbone.Relational = {
+		showWarnings: true
+	};
+
+	/**
+	 * Semaphore mixin; can be used as both binary and counting.
+	 **/
+	Backbone.Semaphore = {
+		_permitsAvailable: null,
+		_permitsUsed: 0,
+		
+		acquire: function() {
+			if ( this._permitsAvailable && this._permitsUsed >= this._permitsAvailable ) {
+				throw new Error( 'Max permits acquired' );
+			}
+			else {
+				this._permitsUsed++;
+			}
+		},
+		
+		release: function() {
+			if ( this._permitsUsed === 0 ) {
+				throw new Error( 'All permits released' );
+			}
+			else {
+				this._permitsUsed--;
+			}
+		},
+		
+		isLocked: function() {
+			return this._permitsUsed > 0;
+		},
+		
+		setAvailablePermits: function( amount ) {
+			if ( this._permitsUsed > amount ) {
+				throw new Error( 'Available permits cannot be less than used permits' );
+			}
+			this._permitsAvailable = amount;
+		}
+	};
+	
+	/**
+	 * A BlockingQueue that accumulates items while blocked (via 'block'),
+	 * and processes them when unblocked (via 'unblock').
+	 * Process can also be called manually (via 'process').
+	 */
+	Backbone.BlockingQueue = function() {
+		this._queue = [];
+	};
+	_.extend( Backbone.BlockingQueue.prototype, Backbone.Semaphore, {
+		_queue: null,
+		
+		add: function( func ) {
+			if ( this.isBlocked() ) {
+				this._queue.push( func );
+			}
+			else {
+				func();
+			}
+		},
+		
+		process: function() {
+			while ( this._queue && this._queue.length ) {
+				this._queue.shift()();
+			}
+		},
+		
+		block: function() {
+			this.acquire();
+		},
+		
+		unblock: function() {
+			this.release();
+			if ( !this.isBlocked() ) {
+				this.process();
+			}
+		},
+		
+		isBlocked: function() {
+			return this.isLocked();
+		}
+	});
+	/**
+	 * Global event queue. Accumulates external events ('add:<key>', 'remove:<key>' and 'update:<key>')
+	 * until the top-level object is fully initialized (see 'Backbone.RelationalModel').
+	 */
+	Backbone.Relational.eventQueue = new Backbone.BlockingQueue();
+	
+	/**
+	 * Backbone.Store keeps track of all created (and destruction of) Backbone.RelationalModel.
+	 * Handles lookup for relations.
+	 */
+	Backbone.Store = function() {
+		this._collections = [];
+		this._reverseRelations = [];
+		this._subModels = [];
+		this._modelScopes = [ exports ];
+	};
+	_.extend( Backbone.Store.prototype, Backbone.Events, {
+		addModelScope: function( scope ) {
+			this._modelScopes.push( scope );
+		},
+
+		/**
+		 * Add a set of subModelTypes to the store, that can be used to resolve the '_superModel'
+		 * for a model later in 'setupSuperModel'.
+		 *
+		 * @param {Backbone.RelationalModel} subModelTypes
+		 * @param {Backbone.RelationalModel} superModelType
+		 */
+		addSubModels: function( subModelTypes, superModelType ) {
+			this._subModels.push({
+				'superModelType': superModelType,
+				'subModels': subModelTypes
+			});
+		},
+
+		/**
+		 * Check if the given modelType is registered as another model's subModel. If so, add it to the super model's
+		 * '_subModels', and set the modelType's '_superModel', '_subModelTypeName', and '_subModelTypeAttribute'.
+		 *
+		 * @param {Backbone.RelationalModel} modelType
+		 */
+		setupSuperModel: function( modelType ) {
+			_.find( this._subModels, function( subModelDef ) {
+				return _.find( subModelDef.subModels, function( subModelTypeName, typeValue ) {
+					var subModelType = this.getObjectByName( subModelTypeName );
+
+					if ( modelType === subModelType ) {
+						// Set 'modelType' as a child of the found superModel
+						subModelDef.superModelType._subModels[ typeValue ] = modelType;
+
+						// Set '_superModel', '_subModelTypeValue', and '_subModelTypeAttribute' on 'modelType'.
+						modelType._superModel = subModelDef.superModelType;
+						modelType._subModelTypeValue = typeValue;
+						modelType._subModelTypeAttribute = subModelDef.superModelType.prototype.subModelTypeAttribute;
+						return true;
+					}
+				}, this );
+			}, this );
+		},
+		
+		/**
+		 * Add a reverse relation. Is added to the 'relations' property on model's prototype, and to
+		 * existing instances of 'model' in the store as well.
+		 * @param {Object} relation
+		 * @param {Backbone.RelationalModel} relation.model
+		 * @param {String} relation.type
+		 * @param {String} relation.key
+		 * @param {String|Object} relation.relatedModel
+		 */
+		addReverseRelation: function( relation ) {
+			var exists = _.any( this._reverseRelations, function( rel ) {
+					return _.all( relation, function( val, key ) {
+							return val === rel[ key ];
+						});
+				});
+			
+			if ( !exists && relation.model && relation.type ) {
+				this._reverseRelations.push( relation );
+				
+				var addRelation = function( model, relation ) {
+					if ( !model.prototype.relations ) {
+						model.prototype.relations = [];
+					}
+					model.prototype.relations.push( relation );
+					
+					_.each( model._subModels, function( subModel ) {
+							addRelation( subModel, relation );
+						}, this );
+				};
+				
+				addRelation( relation.model, relation );
+				
+				this.retroFitRelation( relation );
+			}
+		},
+		
+		/**
+		 * Add a 'relation' to all existing instances of 'relation.model' in the store
+		 * @param {Object} relation
+		 */
+		retroFitRelation: function( relation ) {
+			var coll = this.getCollection( relation.model );
+			coll.each( function( model ) {
+				if ( !( model instanceof relation.model ) ) {
+					return;
+				}
+
+				new relation.type( model, relation );
+			}, this);
+		},
+		
+		/**
+		 * Find the Store's collection for a certain type of model.
+		 * @param {Backbone.RelationalModel} model
+		 * @return {Backbone.Collection} A collection if found (or applicable for 'model'), or null
+		 */
+		getCollection: function( model ) {
+			if ( model instanceof Backbone.RelationalModel ) {
+				model = model.constructor;
+			}
+			
+			var rootModel = model;
+			while ( rootModel._superModel ) {
+				rootModel = rootModel._superModel;
+			}
+			
+			var coll = _.detect( this._collections, function( c ) {
+					return c.model === rootModel;
+				});
+			
+			if ( !coll ) {
+				coll = this._createCollection( rootModel );
+			}
+			
+			return coll;
+		},
+		
+		/**
+		 * Find a type on the global object by name. Splits name on dots.
+		 * @param {String} name
+		 * @return {Object}
+		 */
+		getObjectByName: function( name ) {
+			var parts = name.split( '.' ),
+				type = null;
+
+			_.find( this._modelScopes, function( scope ) {
+				type = _.reduce( parts, function( memo, val ) {
+					return memo[ val ];
+				}, scope );
+
+				if ( type && type !== scope ) {
+					return true;
+				}
+			}, this );
+
+			return type;
+		},
+		
+		_createCollection: function( type ) {
+			var coll;
+			
+			// If 'type' is an instance, take its constructor
+			if ( type instanceof Backbone.RelationalModel ) {
+				type = type.constructor;
+			}
+			
+			// Type should inherit from Backbone.RelationalModel.
+			if ( type.prototype instanceof Backbone.RelationalModel ) {
+				coll = new Backbone.Collection();
+				coll.model = type;
+				
+				this._collections.push( coll );
+			}
+			
+			return coll;
+		},
+
+		/**
+		 * Find the attribute that is to be used as the `id` on a given object
+		 * @param type
+		 * @param {String|Number|Object|Backbone.RelationalModel} item
+		 * @return {String|Number}
+		 */
+		resolveIdForItem: function( type, item ) {
+			var id = _.isString( item ) || _.isNumber( item ) ? item : null;
+
+			if ( id === null ) {
+				if ( item instanceof Backbone.RelationalModel ) {
+					id = item.id;
+				}
+				else if ( _.isObject( item ) ) {
+					id = item[ type.prototype.idAttribute ];
+				}
+			}
+
+			// Make all falsy values `null` (except for 0, which could be an id.. see '/issues/179')
+			if ( !id && id !== 0 ) {
+				id = null;
+			}
+
+			return id;
+		},
+
+		/**
+		 *
+		 * @param type
+		 * @param {String|Number|Object|Backbone.RelationalModel} item
+		 */
+		find: function( type, item ) {
+			var id = this.resolveIdForItem( type, item );
+			var coll = this.getCollection( type );
+			
+			// Because the found object could be of any of the type's superModel
+			// types, only return it if it's actually of the type asked for.
+			if ( coll ) {
+				var obj = coll.get( id );
+
+				if ( obj instanceof type ) {
+					return obj;
+				}
+			}
+
+			return null;
+		},
+		
+		/**
+		 * Add a 'model' to it's appropriate collection. Retain the original contents of 'model.collection'.
+		 * @param {Backbone.RelationalModel} model
+		 */
+		register: function( model ) {
+			var coll = this.getCollection( model );
+
+			if ( coll ) {
+				if ( coll.get( model ) ) {
+					throw new Error( "Cannot instantiate more than one Backbone.RelationalModel with the same id per type!" );
+				}
+
+				var modelColl = model.collection;
+				coll.add( model );
+				model.bind( 'destroy', this.unregister, this );
+				model.collection = modelColl;
+			}
+		},
+		
+		/**
+		 * Explicitly update a model's id in it's store collection
+		 * @param {Backbone.RelationalModel} model
+		 */
+		update: function( model ) {
+			var coll = this.getCollection( model );
+			coll._onModelEvent( 'change:' + model.idAttribute, model, coll );
+		},
+		
+		/**
+		 * Remove a 'model' from the store.
+		 * @param {Backbone.RelationalModel} model
+		 */
+		unregister: function( model ) {
+			model.unbind( 'destroy', this.unregister );
+			var coll = this.getCollection( model );
+			coll && coll.remove( model );
+		}
+	});
+	Backbone.Relational.store = new Backbone.Store();
+	
+	/**
+	 * The main Relation class, from which 'HasOne' and 'HasMany' inherit. Internally, 'relational:<key>' events
+	 * are used to regulate addition and removal of models from relations.
+	 *
+	 * @param {Backbone.RelationalModel} instance
+	 * @param {Object} options
+	 * @param {string} options.key
+	 * @param {Backbone.RelationalModel.constructor} options.relatedModel
+	 * @param {Boolean|String} [options.includeInJSON=true] Serialize the given attribute for related model(s)' in toJSON, or just their ids.
+	 * @param {Boolean} [options.createModels=true] Create objects from the contents of keys if the object is not found in Backbone.store.
+	 * @param {Object} [options.reverseRelation] Specify a bi-directional relation. If provided, Relation will reciprocate
+	 *    the relation to the 'relatedModel'. Required and optional properties match 'options', except that it also needs
+	 *    {Backbone.Relation|String} type ('HasOne' or 'HasMany').
+	 */
+	Backbone.Relation = function( instance, options ) {
+		this.instance = instance;
+		// Make sure 'options' is sane, and fill with defaults from subclasses and this object's prototype
+		options = _.isObject( options ) ? options : {};
+		this.reverseRelation = _.defaults( options.reverseRelation || {}, this.options.reverseRelation );
+		this.reverseRelation.type = !_.isString( this.reverseRelation.type ) ? this.reverseRelation.type :
+			Backbone[ this.reverseRelation.type ] || Backbone.Relational.store.getObjectByName( this.reverseRelation.type );
+		this.model = options.model || this.instance.constructor;
+		this.options = _.defaults( options, this.options, Backbone.Relation.prototype.options );
+		
+		this.key = this.options.key;
+		this.keySource = this.options.keySource || this.key;
+		this.keyDestination = this.options.keyDestination || this.keySource || this.key;
+
+		// 'exports' should be the global object where 'relatedModel' can be found on if given as a string.
+		this.relatedModel = this.options.relatedModel;
+		if ( _.isString( this.relatedModel ) ) {
+			this.relatedModel = Backbone.Relational.store.getObjectByName( this.relatedModel );
+		}
+
+		if ( !this.checkPreconditions() ) {
+			return false;
+		}
+
+		if ( instance ) {
+			this.keyContents = this.instance.get( this.keySource );
+
+			// Explicitly clear 'keySource', to prevent a leaky abstraction if 'keySource' differs from 'key'.
+			if ( this.key !== this.keySource ) {
+				this.instance.unset( this.keySource, { silent: true } );
+			}
+
+			// Add this Relation to instance._relations
+			this.instance._relations.push( this );
+		}
+
+		// Add the reverse relation on 'relatedModel' to the store's reverseRelations
+		if ( !this.options.isAutoRelation && this.reverseRelation.type && this.reverseRelation.key ) {
+			Backbone.Relational.store.addReverseRelation( _.defaults( {
+					isAutoRelation: true,
+					model: this.relatedModel,
+					relatedModel: this.model,
+					reverseRelation: this.options // current relation is the 'reverseRelation' for it's own reverseRelation
+				},
+				this.reverseRelation // Take further properties from this.reverseRelation (type, key, etc.)
+			) );
+		}
+
+		_.bindAll( this, '_modelRemovedFromCollection', '_relatedModelAdded', '_relatedModelRemoved' );
+
+		if ( instance ) {
+			this.initialize();
+
+			// When a model in the store is destroyed, check if it is 'this.instance'.
+			Backbone.Relational.store.getCollection( this.instance )
+				.bind( 'relational:remove', this._modelRemovedFromCollection );
+
+			// When 'relatedModel' are created or destroyed, check if it affects this relation.
+			Backbone.Relational.store.getCollection( this.relatedModel )
+				.bind( 'relational:add', this._relatedModelAdded )
+				.bind( 'relational:remove', this._relatedModelRemoved );
+		}
+	};
+	// Fix inheritance :\
+	Backbone.Relation.extend = Backbone.Model.extend;
+	// Set up all inheritable **Backbone.Relation** properties and methods.
+	_.extend( Backbone.Relation.prototype, Backbone.Events, Backbone.Semaphore, {
+		options: {
+			createModels: true,
+			includeInJSON: true,
+			isAutoRelation: false
+		},
+		
+		instance: null,
+		key: null,
+		keyContents: null,
+		relatedModel: null,
+		reverseRelation: null,
+		related: null,
+		
+		_relatedModelAdded: function( model, coll, options ) {
+			// Allow 'model' to set up it's relations, before calling 'tryAddRelated'
+			// (which can result in a call to 'addRelated' on a relation of 'model')
+			var dit = this;
+			model.queue( function() {
+				dit.tryAddRelated( model, options );
+			});
+		},
+		
+		_relatedModelRemoved: function( model, coll, options ) {
+			this.removeRelated( model, options );
+		},
+		
+		_modelRemovedFromCollection: function( model ) {
+			if ( model === this.instance ) {
+				this.destroy();
+			}
+		},
+		
+		/**
+		 * Check several pre-conditions.
+		 * @return {Boolean} True if pre-conditions are satisfied, false if they're not.
+		 */
+		checkPreconditions: function() {
+			var i = this.instance,
+				k = this.key,
+				m = this.model,
+				rm = this.relatedModel,
+				warn = Backbone.Relational.showWarnings && typeof console !== 'undefined';
+
+			if ( !m || !k || !rm ) {
+				warn && console.warn( 'Relation=%o; no model, key or relatedModel (%o, %o, %o)', this, m, k, rm );
+				return false;
+			}
+			// Check if the type in 'model' inherits from Backbone.RelationalModel
+			if ( !( m.prototype instanceof Backbone.RelationalModel ) ) {
+				warn && console.warn( 'Relation=%o; model does not inherit from Backbone.RelationalModel (%o)', this, i );
+				return false;
+			}
+			// Check if the type in 'relatedModel' inherits from Backbone.RelationalModel
+			if ( !( rm.prototype instanceof Backbone.RelationalModel ) ) {
+				warn && console.warn( 'Relation=%o; relatedModel does not inherit from Backbone.RelationalModel (%o)', this, rm );
+				return false;
+			}
+			// Check if this is not a HasMany, and the reverse relation is HasMany as well
+			if ( this instanceof Backbone.HasMany && this.reverseRelation.type === Backbone.HasMany ) {
+				warn && console.warn( 'Relation=%o; relation is a HasMany, and the reverseRelation is HasMany as well.', this );
+				return false;
+			}
+
+			// Check if we're not attempting to create a duplicate relationship
+			if ( i && i._relations.length ) {
+				var exists = _.any( i._relations, function( rel ) {
+						var hasReverseRelation = this.reverseRelation.key && rel.reverseRelation.key;
+						return rel.relatedModel === rm && rel.key === k &&
+							( !hasReverseRelation || this.reverseRelation.key === rel.reverseRelation.key );
+					}, this );
+
+				if ( exists ) {
+					warn && console.warn( 'Relation=%o between instance=%o.%s and relatedModel=%o.%s already exists',
+						this, i, k, rm, this.reverseRelation.key );
+					return false;
+				}
+			}
+
+			return true;
+		},
+
+		/**
+		 * Set the related model(s) for this relation
+		 * @param {Backbone.Mode|Backbone.Collection} related
+		 * @param {Object} [options]
+		 */
+		setRelated: function( related, options ) {
+			this.related = related;
+
+			this.instance.acquire();
+			this.instance.set( this.key, related, _.defaults( options || {}, { silent: true } ) );
+			this.instance.release();
+		},
+		
+		/**
+		 * Determine if a relation (on a different RelationalModel) is the reverse
+		 * relation of the current one.
+		 * @param {Backbone.Relation} relation
+		 * @return {Boolean}
+		 */
+		_isReverseRelation: function( relation ) {
+			if ( relation.instance instanceof this.relatedModel && this.reverseRelation.key === relation.key &&
+					this.key === relation.reverseRelation.key ) {
+				return true;
+			}
+			return false;
+		},
+		
+		/**
+		 * Get the reverse relations (pointing back to 'this.key' on 'this.instance') for the currently related model(s).
+		 * @param {Backbone.RelationalModel} [model] Get the reverse relations for a specific model.
+		 *    If not specified, 'this.related' is used.
+		 * @return {Backbone.Relation[]}
+		 */
+		getReverseRelations: function( model ) {
+			var reverseRelations = [];
+			// Iterate over 'model', 'this.related.models' (if this.related is a Backbone.Collection), or wrap 'this.related' in an array.
+			var models = !_.isUndefined( model ) ? [ model ] : this.related && ( this.related.models || [ this.related ] );
+			_.each( models , function( related ) {
+					_.each( related.getRelations(), function( relation ) {
+							if ( this._isReverseRelation( relation ) ) {
+								reverseRelations.push( relation );
+							}
+						}, this );
+				}, this );
+			
+			return reverseRelations;
+		},
+		
+		/**
+		 * Rename options.silent to options.silentChange, so events propagate properly.
+		 * (for example in HasMany, from 'addRelated'->'handleAddition')
+		 * @param {Object} [options]
+		 * @return {Object}
+		 */
+		sanitizeOptions: function( options ) {
+			options = options ? _.clone( options ) : {};
+			if ( options.silent ) {
+				options.silentChange = true;
+				delete options.silent;
+			}
+			return options;
+		},
+
+		/**
+		 * Rename options.silentChange to options.silent, so events are silenced as intended in Backbone's
+		 * original functions.
+		 * @param {Object} [options]
+		 * @return {Object}
+		 */
+		unsanitizeOptions: function( options ) {
+			options = options ? _.clone( options ) : {};
+			if ( options.silentChange ) {
+				options.silent = true;
+				delete options.silentChange;
+			}
+			return options;
+		},
+		
+		// Cleanup. Get reverse relation, call removeRelated on each.
+		destroy: function() {
+			Backbone.Relational.store.getCollection( this.instance )
+				.unbind( 'relational:remove', this._modelRemovedFromCollection );
+			
+			Backbone.Relational.store.getCollection( this.relatedModel )
+				.unbind( 'relational:add', this._relatedModelAdded )
+				.unbind( 'relational:remove', this._relatedModelRemoved );
+			
+			_.each( this.getReverseRelations(), function( relation ) {
+					relation.removeRelated( this.instance );
+				}, this );
+		}
+	});
+	
+	Backbone.HasOne = Backbone.Relation.extend({
+		options: {
+			reverseRelation: { type: 'HasMany' }
+		},
+		
+		initialize: function() {
+			_.bindAll( this, 'onChange' );
+
+			this.instance.bind( 'relational:change:' + this.key, this.onChange );
+
+			var model = this.findRelated( { silent: true } );
+			this.setRelated( model );
+
+			// Notify new 'related' object of the new relation.
+			_.each( this.getReverseRelations(), function( relation ) {
+					relation.addRelated( this.instance );
+				}, this );
+		},
+		
+		findRelated: function( options ) {
+			var item = this.keyContents;
+			var model = null;
+			
+			if ( item instanceof this.relatedModel ) {
+				model = item;
+			}
+			else if ( item || item === 0 ) { // since 0 can be a valid `id` as well
+				model = this.relatedModel.findOrCreate( item, { create: this.options.createModels } );
+			}
+			
+			return model;
+		},
+		
+		/**
+		 * If the key is changed, notify old & new reverse relations and initialize the new relation
+		 */
+		onChange: function( model, attr, options ) {
+			// Don't accept recursive calls to onChange (like onChange->findRelated->findOrCreate->initializeRelations->addRelated->onChange)
+			if ( this.isLocked() ) {
+				return;
+			}
+			this.acquire();
+			options = this.sanitizeOptions( options );
+			
+			// 'options._related' is set by 'addRelated'/'removeRelated'. If it is set, the change
+			// is the result of a call from a relation. If it's not, the change is the result of 
+			// a 'set' call on this.instance.
+			var changed = _.isUndefined( options._related );
+			var oldRelated = changed ? this.related : options._related;
+			
+			if ( changed ) {	
+				this.keyContents = attr;
+				
+				// Set new 'related'
+				if ( attr instanceof this.relatedModel ) {
+					this.related = attr;
+				}
+				else if ( attr ) {
+					var related = this.findRelated( options );
+					this.setRelated( related );
+				}
+				else {
+					this.setRelated( null );
+				}
+			}
+			
+			// Notify old 'related' object of the terminated relation
+			if ( oldRelated && this.related !== oldRelated ) {
+				_.each( this.getReverseRelations( oldRelated ), function( relation ) {
+						relation.removeRelated( this.instance, options );
+					}, this );
+			}
+			
+			// Notify new 'related' object of the new relation. Note we do re-apply even if this.related is oldRelated;
+			// that can be necessary for bi-directional relations if 'this.instance' was created after 'this.related'.
+			// In that case, 'this.instance' will already know 'this.related', but the reverse might not exist yet.
+			_.each( this.getReverseRelations(), function( relation ) {
+					relation.addRelated( this.instance, options );
+				}, this);
+			
+			// Fire the 'update:<key>' event if 'related' was updated
+			if ( !options.silentChange && this.related !== oldRelated ) {
+				var dit = this;
+				Backbone.Relational.eventQueue.add( function() {
+					dit.instance.trigger( 'update:' + dit.key, dit.instance, dit.related, options );
+				});
+			}
+			this.release();
+		},
+		
+		/**
+		 * If a new 'this.relatedModel' appears in the 'store', try to match it to the last set 'keyContents'
+		 */
+		tryAddRelated: function( model, options ) {
+			if ( this.related ) {
+				return;
+			}
+			options = this.sanitizeOptions( options );
+			
+			var item = this.keyContents;
+			if ( item || item === 0 ) { // since 0 can be a valid `id` as well
+				var id = Backbone.Relational.store.resolveIdForItem( this.relatedModel, item );
+				if ( !_.isNull( id ) && model.id === id ) {
+					this.addRelated( model, options );
+				}
+			}
+		},
+		
+		addRelated: function( model, options ) {
+			if ( model !== this.related ) {
+				var oldRelated = this.related || null;
+				this.setRelated( model );
+				this.onChange( this.instance, model, { _related: oldRelated } );
+			}
+		},
+		
+		removeRelated: function( model, options ) {
+			if ( !this.related ) {
+				return;
+			}
+			
+			if ( model === this.related ) {
+				var oldRelated = this.related || null;
+				this.setRelated( null );
+				this.onChange( this.instance, model, { _related: oldRelated } );
+			}
+		}
+	});
+	
+	Backbone.HasMany = Backbone.Relation.extend({
+		collectionType: null,
+		
+		options: {
+			reverseRelation: { type: 'HasOne' },
+			collectionType: Backbone.Collection,
+			collectionKey: true,
+			collectionOptions: {}
+		},
+		
+		initialize: function() {
+			_.bindAll( this, 'onChange', 'handleAddition', 'handleRemoval', 'handleReset' );
+			this.instance.bind( 'relational:change:' + this.key, this.onChange );
+			
+			// Handle a custom 'collectionType'
+			this.collectionType = this.options.collectionType;
+			if ( _.isString( this.collectionType ) ) {
+				this.collectionType = Backbone.Relational.store.getObjectByName( this.collectionType );
+			}
+			if ( !this.collectionType.prototype instanceof Backbone.Collection ){
+				throw new Error( 'collectionType must inherit from Backbone.Collection' );
+			}
+
+			// Handle cases where a model/relation is created with a collection passed straight into 'attributes'
+			if ( this.keyContents instanceof Backbone.Collection ) {
+				this.setRelated( this._prepareCollection( this.keyContents ) );
+			}
+			else {
+				this.setRelated( this._prepareCollection() );
+			}
+
+			this.findRelated( { silent: true } );
+		},
+		
+		_getCollectionOptions: function() {
+			return _.isFunction( this.options.collectionOptions ) ?
+				this.options.collectionOptions( this.instance ) :
+				this.options.collectionOptions;
+		},
+
+		/**
+		 * Bind events and setup collectionKeys for a collection that is to be used as the backing store for a HasMany.
+		 * If no 'collection' is supplied, a new collection will be created of the specified 'collectionType' option.
+		 * @param {Backbone.Collection} [collection]
+		 */
+		_prepareCollection: function( collection ) {
+			if ( this.related ) {
+				this.related
+					.unbind( 'relational:add', this.handleAddition )
+					.unbind( 'relational:remove', this.handleRemoval )
+					.unbind( 'relational:reset', this.handleReset )
+			}
+
+			if ( !collection || !( collection instanceof Backbone.Collection ) ) {
+				collection = new this.collectionType( [], this._getCollectionOptions() );
+			}
+
+			collection.model = this.relatedModel;
+			
+			if ( this.options.collectionKey ) {
+				var key = this.options.collectionKey === true ? this.options.reverseRelation.key : this.options.collectionKey;
+				
+				if ( collection[ key ] && collection[ key ] !== this.instance ) {
+					if ( Backbone.Relational.showWarnings && typeof console !== 'undefined' ) {
+						console.warn( 'Relation=%o; collectionKey=%s already exists on collection=%o', this, key, this.options.collectionKey );
+					}
+				}
+				else if ( key ) {
+					collection[ key ] = this.instance;
+				}
+			}
+			
+			collection
+				.bind( 'relational:add', this.handleAddition )
+				.bind( 'relational:remove', this.handleRemoval )
+				.bind( 'relational:reset', this.handleReset );
+			
+			return collection;
+		},
+		
+		findRelated: function( options ) {
+			if ( this.keyContents ) {
+				var models = [];
+
+				if ( this.keyContents instanceof Backbone.Collection ) {
+					models = this.keyContents.models;
+				}
+				else {
+					// Handle cases the an API/user supplies just an Object/id instead of an Array
+					this.keyContents = _.isArray( this.keyContents ) ? this.keyContents : [ this.keyContents ];
+
+					// Try to find instances of the appropriate 'relatedModel' in the store
+					_.each( this.keyContents, function( item ) {
+							var model = null;
+							if ( item instanceof this.relatedModel ) {
+								model = item;
+							}
+							else if ( item || item === 0 ) { // since 0 can be a valid `id` as well
+								model = this.relatedModel.findOrCreate( item, { create: this.options.createModels } );
+							}
+
+							if ( model && !this.related.getByCid( model ) && !this.related.get( model ) ) {
+								models.push( model );
+							}
+						}, this );
+				}
+
+				// Add all found 'models' in on go, so 'add' will only be called once (and thus 'sort', etc.)
+				if ( models.length ) {
+					options = this.unsanitizeOptions( options );
+					this.related.add( models, options );
+				}
+			}
+		},
+		
+		/**
+		 * If the key is changed, notify old & new reverse relations and initialize the new relation
+		 */
+		onChange: function( model, attr, options ) {
+			options = this.sanitizeOptions( options );
+			this.keyContents = attr;
+			
+			// Notify old 'related' object of the terminated relation
+			_.each( this.getReverseRelations(), function( relation ) {
+					relation.removeRelated( this.instance, options );
+				}, this );
+			
+			// Replace 'this.related' by 'attr' if it is a Backbone.Collection
+			if ( attr instanceof Backbone.Collection ) {
+				this._prepareCollection( attr );
+				this.related = attr;
+			}
+			// Otherwise, 'attr' should be an array of related object ids.
+			// Re-use the current 'this.related' if it is a Backbone.Collection, and remove any current entries.
+			// Otherwise, create a new collection.
+			else {
+				var coll;
+
+				if ( this.related instanceof Backbone.Collection ) {
+					coll = this.related;
+					coll.remove( coll.models );
+				}
+				else {
+					coll = this._prepareCollection();
+				}
+
+				this.setRelated( coll );
+				this.findRelated( options );
+			}
+			
+			// Notify new 'related' object of the new relation
+			_.each( this.getReverseRelations(), function( relation ) {
+					relation.addRelated( this.instance, options );
+				}, this );
+			
+			var dit = this;
+			Backbone.Relational.eventQueue.add( function() {
+				!options.silentChange && dit.instance.trigger( 'update:' + dit.key, dit.instance, dit.related, options );
+			});
+		},
+		
+		tryAddRelated: function( model, options ) {
+			options = this.sanitizeOptions( options );
+			if ( !this.related.getByCid( model ) && !this.related.get( model ) ) {
+				// Check if this new model was specified in 'this.keyContents'
+				var item = _.any( this.keyContents, function( item ) {
+						var id = Backbone.Relational.store.resolveIdForItem( this.relatedModel, item );
+						return !_.isNull( id ) && id === model.id;
+					}, this );
+				
+				if ( item ) {
+					this.related.add( model, options );
+				}
+			}
+		},
+		
+		/**
+		 * When a model is added to a 'HasMany', trigger 'add' on 'this.instance' and notify reverse relations.
+		 * (should be 'HasOne', must set 'this.instance' as their related).
+		 */
+		handleAddition: function( model, coll, options ) {
+			//console.debug('handleAddition called; args=%o', arguments);
+			// Make sure the model is in fact a valid model before continuing.
+			// (it can be invalid as a result of failing validation in Backbone.Collection._prepareModel)
+			if ( !( model instanceof Backbone.Model ) ) {
+				return;
+			}
+			
+			options = this.sanitizeOptions( options );
+			
+			_.each( this.getReverseRelations( model ), function( relation ) {
+					relation.addRelated( this.instance, options );
+				}, this );
+
+			// Only trigger 'add' once the newly added model is initialized (so, has it's relations set up)
+			var dit = this;
+			Backbone.Relational.eventQueue.add( function() {
+				!options.silentChange && dit.instance.trigger( 'add:' + dit.key, model, dit.related, options );
+			});
+		},
+		
+		/**
+		 * When a model is removed from a 'HasMany', trigger 'remove' on 'this.instance' and notify reverse relations.
+		 * (should be 'HasOne', which should be nullified)
+		 */
+		handleRemoval: function( model, coll, options ) {
+			//console.debug('handleRemoval called; args=%o', arguments);
+			if ( !( model instanceof Backbone.Model ) ) {
+				return;
+			}
+
+			options = this.sanitizeOptions( options );
+			
+			_.each( this.getReverseRelations( model ), function( relation ) {
+					relation.removeRelated( this.instance, options );
+				}, this );
+			
+			var dit = this;
+			Backbone.Relational.eventQueue.add( function() {
+				!options.silentChange && dit.instance.trigger( 'remove:' + dit.key, model, dit.related, options );
+			});
+		},
+
+		handleReset: function( coll, options ) {
+			options = this.sanitizeOptions( options );
+
+			var dit = this;
+			Backbone.Relational.eventQueue.add( function() {
+				!options.silentChange && dit.instance.trigger( 'reset:' + dit.key, dit.related, options );
+			});
+		},
+		
+		addRelated: function( model, options ) {
+			var dit = this;
+			options = this.unsanitizeOptions( options );
+			model.queue( function() { // Queued to avoid errors for adding 'model' to the 'this.related' set twice
+				if ( dit.related && !dit.related.getByCid( model ) && !dit.related.get( model ) ) {
+					dit.related.add( model, options );
+				}
+			});
+		},
+		
+		removeRelated: function( model, options ) {
+			options = this.unsanitizeOptions( options );
+			if ( this.related.getByCid( model ) || this.related.get( model ) ) {
+				this.related.remove( model, options );
+			}
+		}
+	});
+	
+	/**
+	 * A type of Backbone.Model that also maintains relations to other models and collections.
+	 * New events when compared to the original:
+	 *  - 'add:<key>' (model, related collection, options)
+	 *  - 'remove:<key>' (model, related collection, options)
+	 *  - 'update:<key>' (model, related model or collection, options)
+	 */
+	Backbone.RelationalModel = Backbone.Model.extend({
+		relations: null, // Relation descriptions on the prototype
+		_relations: null, // Relation instances
+		_isInitialized: false,
+		_deferProcessing: false,
+		_queue: null,
+		
+		subModelTypeAttribute: 'type',
+		subModelTypes: null,
+		
+		constructor: function( attributes, options ) {
+			// Nasty hack, for cases like 'model.get( <HasMany key> ).add( item )'.
+			// Defer 'processQueue', so that when 'Relation.createModels' is used we:
+			// a) Survive 'Backbone.Collection.add'; this takes care we won't error on "can't add model to a set twice"
+			//    (by creating a model from properties, having the model add itself to the collection via one of
+			//    it's relations, then trying to add it to the collection).
+			// b) Trigger 'HasMany' collection events only after the model is really fully set up.
+			// Example that triggers both a and b: "p.get('jobs').add( { company: c, person: p } )".
+			var dit = this;
+			if ( options && options.collection ) {
+				this._deferProcessing = true;
+				
+				var processQueue = function( model ) {
+					if ( model === dit ) {
+						dit._deferProcessing = false;
+						dit.processQueue();
+						options.collection.unbind( 'relational:add', processQueue );
+					}
+				};
+				options.collection.bind( 'relational:add', processQueue );
+				
+				// So we do process the queue eventually, regardless of whether this model really gets added to 'options.collection'.
+				_.defer( function() {
+					processQueue( dit );
+				});
+			}
+			
+			this._queue = new Backbone.BlockingQueue();
+			this._queue.block();
+			Backbone.Relational.eventQueue.block();
+			
+			Backbone.Model.apply( this, arguments );
+			
+			// Try to run the global queue holding external events
+			Backbone.Relational.eventQueue.unblock();
+		},
+		
+		/**
+		 * Override 'trigger' to queue 'change' and 'change:*' events
+		 */
+		trigger: function( eventName ) {
+			if ( eventName.length > 5 && 'change' === eventName.substr( 0, 6 ) ) {
+				var dit = this, args = arguments;
+				Backbone.Relational.eventQueue.add( function() {
+						Backbone.Model.prototype.trigger.apply( dit, args );
+					});
+			}
+			else {
+				Backbone.Model.prototype.trigger.apply( this, arguments );
+			}
+			
+			return this;
+		},
+		
+		/**
+		 * Initialize Relations present in this.relations; determine the type (HasOne/HasMany), then creates a new instance.
+		 * Invoked in the first call so 'set' (which is made from the Backbone.Model constructor).
+		 */
+		initializeRelations: function() {
+			this.acquire(); // Setting up relations often also involve calls to 'set', and we only want to enter this function once
+			this._relations = [];
+			
+			_.each( this.relations, function( rel ) {
+					var type = !_.isString( rel.type ) ? rel.type :	Backbone[ rel.type ] || Backbone.Relational.store.getObjectByName( rel.type );
+					if ( type && type.prototype instanceof Backbone.Relation ) {
+						new type( this, rel ); // Also pushes the new Relation into _relations
+					}
+					else {
+						Backbone.Relational.showWarnings && typeof console !== 'undefined' && console.warn( 'Relation=%o; missing or invalid type!', rel );
+					}
+				}, this );
+			
+			this._isInitialized = true;
+			this.release();
+			this.processQueue();
+		},
+
+		/**
+		 * When new values are set, notify this model's relations (also if options.silent is set).
+		 * (Relation.setRelated locks this model before calling 'set' on it to prevent loops)
+		 */
+		updateRelations: function( options ) {
+			if ( this._isInitialized && !this.isLocked() ) {
+				_.each( this._relations, function( rel ) {
+					// Update from data in `rel.keySource` if set, or `rel.key` otherwise
+					var val = this.attributes[ rel.keySource ] || this.attributes[ rel.key ];
+					if ( rel.related !== val ) {
+						this.trigger( 'relational:change:' + rel.key, this, val, options || {} );
+					}
+				}, this );
+			}
+		},
+		
+		/**
+		 * Either add to the queue (if we're not initialized yet), or execute right away.
+		 */
+		queue: function( func ) {
+			this._queue.add( func );
+		},
+		
+		/**
+		 * Process _queue
+		 */
+		processQueue: function() {
+			if ( this._isInitialized && !this._deferProcessing && this._queue.isBlocked() ) {
+				this._queue.unblock();
+			}
+		},
+		
+		/**
+		 * Get a specific relation.
+		 * @param key {string} The relation key to look for.
+		 * @return {Backbone.Relation} An instance of 'Backbone.Relation', if a relation was found for 'key', or null.
+		 */
+		getRelation: function( key ) {
+			return _.detect( this._relations, function( rel ) {
+				if ( rel.key === key ) {
+					return true;
+				}
+			}, this );
+		},
+		
+		/**
+		 * Get all of the created relations.
+		 * @return {Backbone.Relation[]}
+		 */
+		getRelations: function() {
+			return this._relations;
+		},
+		
+		/**
+		 * Retrieve related objects.
+		 * @param key {string} The relation key to fetch models for.
+		 * @param [options] {Object} Options for 'Backbone.Model.fetch' and 'Backbone.sync'.
+		 * @param [update=false] {boolean} Whether to force a fetch from the server (updating existing models).
+		 * @return {jQuery.when[]} An array of request objects
+		 */
+		fetchRelated: function( key, options, update ) {
+			options || ( options = {} );
+			var setUrl,
+				requests = [],
+				rel = this.getRelation( key ),
+				keyContents = rel && rel.keyContents,
+				toFetch = keyContents && _.select( _.isArray( keyContents ) ? keyContents : [ keyContents ], function( item ) {
+					var id = Backbone.Relational.store.resolveIdForItem( rel.relatedModel, item );
+					return !_.isNull( id ) && ( update || !Backbone.Relational.store.find( rel.relatedModel, id ) );
+				}, this );
+			
+			if ( toFetch && toFetch.length ) {
+				// Create a model for each entry in 'keyContents' that is to be fetched
+				var models = _.map( toFetch, function( item ) {
+					var model;
+
+					if ( _.isObject( item ) ) {
+						model = rel.relatedModel.build( item );
+					}
+					else {
+						var attrs = {};
+						attrs[ rel.relatedModel.prototype.idAttribute ] = item;
+						model = rel.relatedModel.build( attrs );
+					}
+
+					return model;
+				}, this );
+				
+				// Try if the 'collection' can provide a url to fetch a set of models in one request.
+				if ( rel.related instanceof Backbone.Collection && _.isFunction( rel.related.url ) ) {
+					setUrl = rel.related.url( models );
+				}
+				
+				// An assumption is that when 'Backbone.Collection.url' is a function, it can handle building of set urls.
+				// To make sure it can, test if the url we got by supplying a list of models to fetch is different from
+				// the one supplied for the default fetch action (without args to 'url').
+				if ( setUrl && setUrl !== rel.related.url() ) {
+					var opts = _.defaults(
+						{
+							error: function() {
+								var args = arguments;
+								_.each( models, function( model ) {
+										model.trigger( 'destroy', model, model.collection, options );
+										options.error && options.error.apply( model, args );
+									});
+							},
+							url: setUrl
+						},
+						options,
+						{ add: true }
+					);
+
+					requests = [ rel.related.fetch( opts ) ];
+				}
+				else {
+					requests = _.map( models, function( model ) {
+						var opts = _.defaults(
+							{
+								error: function() {
+									model.trigger( 'destroy', model, model.collection, options );
+									options.error && options.error.apply( model, arguments );
+								}
+							},
+							options
+						);
+						return model.fetch( opts );
+					}, this );
+				}
+			}
+			
+			return requests;
+		},
+		
+		set: function( key, value, options ) {
+			Backbone.Relational.eventQueue.block();
+			
+			// Duplicate backbone's behavior to allow separate key/value parameters, instead of a single 'attributes' object
+			var attributes;
+			if ( _.isObject( key ) || key == null ) {
+				attributes = key;
+				options = value;
+			}
+			else {
+				attributes = {};
+				attributes[ key ] = value;
+			}
+			
+			var result = Backbone.Model.prototype.set.apply( this, arguments );
+			
+			// Ideal place to set up relations :)
+			if ( !this._isInitialized && !this.isLocked() ) {
+				this.constructor.initializeModelHierarchy();
+
+				Backbone.Relational.store.register( this );
+
+				this.initializeRelations();
+			}
+			// Update the 'idAttribute' in Backbone.store if; we don't want it to miss an 'id' update due to {silent:true}
+			else if ( attributes && this.idAttribute in attributes ) {
+				Backbone.Relational.store.update( this );
+			}
+			
+			if ( attributes ) {
+				this.updateRelations( options );
+			}
+			
+			// Try to run the global queue holding external events
+			Backbone.Relational.eventQueue.unblock();
+			
+			return result;
+		},
+		
+		unset: function( attribute, options ) {
+			Backbone.Relational.eventQueue.block();
+			
+			var result = Backbone.Model.prototype.unset.apply( this, arguments );
+			this.updateRelations( options );
+			
+			// Try to run the global queue holding external events
+			Backbone.Relational.eventQueue.unblock();
+			
+			return result;
+		},
+		
+		clear: function( options ) {
+			Backbone.Relational.eventQueue.block();
+			
+			var result = Backbone.Model.prototype.clear.apply( this, arguments );
+			this.updateRelations( options );
+			
+			// Try to run the global queue holding external events
+			Backbone.Relational.eventQueue.unblock();
+			
+			return result;
+		},
+		
+		/**
+		 * Override 'change', so the change will only execute after 'set' has finised (relations are updated),
+		 * and 'previousAttributes' will be available when the event is fired.
+		 */
+		change: function( options ) {
+			var dit = this, args = arguments;
+			Backbone.Relational.eventQueue.add( function() {
+					Backbone.Model.prototype.change.apply( dit, args );
+				});
+		},
+
+		clone: function() {
+			var attributes = _.clone( this.attributes );
+			if ( !_.isUndefined( attributes[ this.idAttribute ] ) ) {
+				attributes[ this.idAttribute ] = null;
+			}
+
+			_.each( this.getRelations(), function( rel ) {
+					delete attributes[ rel.key ];
+				});
+
+			return new this.constructor( attributes );
+		},
+		
+		/**
+		 * Convert relations to JSON, omits them when required
+		 */
+		toJSON: function() {
+			// If this Model has already been fully serialized in this branch once, return to avoid loops
+			if ( this.isLocked() ) {
+				return this.id;
+			}
+			
+			this.acquire();
+			var json = Backbone.Model.prototype.toJSON.call( this );
+			
+			if ( this.constructor._superModel && !( this.constructor._subModelTypeAttribute in json ) ) {
+				json[ this.constructor._subModelTypeAttribute ] = this.constructor._subModelTypeValue;
+			}
+			
+			_.each( this._relations, function( rel ) {
+					var value = json[ rel.key ];
+
+					if ( rel.options.includeInJSON === true) {
+						if ( value && _.isFunction( value.toJSON ) ) {
+							json[ rel.keyDestination ] = value.toJSON();
+						}
+						else {
+							json[ rel.keyDestination ] = null;
+						}
+					}
+					else if ( _.isString( rel.options.includeInJSON ) ) {
+						if ( value instanceof Backbone.Collection ) {
+							json[ rel.keyDestination ] = value.pluck( rel.options.includeInJSON );
+						}
+						else if ( value instanceof Backbone.Model ) {
+							json[ rel.keyDestination ] = value.get( rel.options.includeInJSON );
+						}	
+						else {
+							json[ rel.keyDestination ] = null;
+						}
+					}
+					else if ( _.isArray( rel.options.includeInJSON ) ) {
+						if ( value instanceof Backbone.Collection ) {
+							var valueSub = [];
+							value.each( function( model ) {
+								var curJson = {};
+								_.each( rel.options.includeInJSON, function( key ) {
+									curJson[ key ] = model.get( key );
+								});
+								valueSub.push( curJson );
+							});
+							json[ rel.keyDestination ] = valueSub;
+						}
+						else if ( value instanceof Backbone.Model ) {
+							var valueSub = {};
+							_.each( rel.options.includeInJSON, function( key ) {
+								valueSub[ key ] = value.get( key );
+							});
+							json[ rel.keyDestination ] = valueSub;
+						}
+						else {
+							json[ rel.keyDestination ] = null;
+						}
+					}
+					else {
+						delete json[ rel.key ];
+					}
+
+					if ( rel.keyDestination !== rel.key ) {
+						delete json[ rel.key ];
+					}
+				});
+			
+			this.release();
+			return json;
+		}
+	},
+	{
+		setup: function( superModel ) {
+			// We don't want to share a relations array with a parent, as this will cause problems with
+			// reverse relations.
+			this.prototype.relations = ( this.prototype.relations || [] ).slice( 0 );
+
+			this._subModels = {};
+			this._superModel = null;
+
+			// If this model has 'subModelTypes' itself, remember them in the store
+			if ( this.prototype.hasOwnProperty( 'subModelTypes' ) ) {
+				Backbone.Relational.store.addSubModels( this.prototype.subModelTypes, this );
+			}
+			// The 'subModelTypes' property should not be inherited, so reset it.
+			else {
+				this.prototype.subModelTypes = null;
+			}
+
+			// Initialize all reverseRelations that belong to this new model.
+			_.each( this.prototype.relations, function( rel ) {
+					if ( !rel.model ) {
+						rel.model = this;
+					}
+
+					if ( rel.reverseRelation && rel.model === this ) {				
+						var preInitialize = true;
+						if ( _.isString( rel.relatedModel ) ) {
+							/**
+							 * The related model might not be defined for two reasons
+							 *  1. it never gets defined, e.g. a typo
+							 *  2. it is related to itself
+							 * In neither of these cases do we need to pre-initialize reverse relations.
+							 */
+							var relatedModel = Backbone.Relational.store.getObjectByName( rel.relatedModel );
+							preInitialize = relatedModel && ( relatedModel.prototype instanceof Backbone.RelationalModel );
+						}
+
+						var type = !_.isString( rel.type ) ? rel.type : Backbone[ rel.type ] || Backbone.Relational.store.getObjectByName( rel.type );
+						if ( preInitialize && type && type.prototype instanceof Backbone.Relation ) {
+							new type( null, rel );
+						}
+					}
+				}, this );
+			
+			return this;
+		},
+
+		/**
+		 * Create a 'Backbone.Model' instance based on 'attributes'.
+		 * @param {Object} attributes
+		 * @param {Object} [options]
+		 * @return {Backbone.Model}
+		 */
+		build: function( attributes, options ) {
+			var model = this;
+
+			// 'build' is a possible entrypoint; it's possible no model hierarchy has been determined yet.
+			this.initializeModelHierarchy();
+
+			// Determine what type of (sub)model should be built if applicable.
+			// Lookup the proper subModelType in 'this._subModels'.
+			if ( this._subModels && this.prototype.subModelTypeAttribute in attributes ) {
+				var subModelTypeAttribute = attributes[ this.prototype.subModelTypeAttribute ];
+				var subModelType = this._subModels[ subModelTypeAttribute ];
+				if ( subModelType ) {
+					model = subModelType;
+				}
+			}
+			
+			return new model( attributes, options );
+		},
+
+		initializeModelHierarchy: function() {
+			// If we're here for the first time, try to determine if this modelType has a 'superModel'.
+			if ( _.isUndefined( this._superModel ) || _.isNull( this._superModel ) ) {
+				Backbone.Relational.store.setupSuperModel( this );
+
+				// If a superModel has been found, copy relations from the _superModel if they haven't been
+				// inherited automatically (due to a redefinition of 'relations').
+				// Otherwise, make sure we don't get here again for this type by making '_superModel' false so we fail
+				// the isUndefined/isNull check next time.
+				if ( this._superModel ) {
+					//
+					if ( this._superModel.prototype.relations ) {
+						var supermodelRelationsExist = _.any( this.prototype.relations, function( rel ) {
+							return rel.model && rel.model !== this;
+						}, this );
+
+						if ( !supermodelRelationsExist ) {
+							this.prototype.relations = this._superModel.prototype.relations.concat( this.prototype.relations );
+						}
+					}
+				}
+				else {
+					this._superModel = false;
+				}
+			}
+
+			// If we came here through 'build' for a model that has 'subModelTypes', and not all of them have been resolved yet, try to resolve each.
+			if ( this.prototype.subModelTypes && _.keys( this.prototype.subModelTypes ).length !== _.keys( this._subModels ).length ) {
+				_.each( this.prototype.subModelTypes, function( subModelTypeName ) {
+					var subModelType = Backbone.Relational.store.getObjectByName( subModelTypeName );
+					subModelType && subModelType.initializeModelHierarchy();
+				});
+			}
+		},
+
+		/**
+		 * Find an instance of `this` type in 'Backbone.Relational.store'.
+		 * - If `attributes` is a string or a number, `findOrCreate` will just query the `store` and return a model if found.
+		 * - If `attributes` is an object, the model will be updated with `attributes` if found.
+		 *   Otherwise, a new model is created with `attributes` (unless `options.create` is explicitly set to `false`).
+		 * @param {Object|String|Number} attributes Either a model's id, or the attributes used to create or update a model.
+		 * @param {Object} [options]
+		 * @param {Boolean} [options.create=true]
+		 * @return {Backbone.RelationalModel}
+		 */
+		findOrCreate: function( attributes, options ) {
+			// Try to find an instance of 'this' model type in the store
+			var model = Backbone.Relational.store.find( this, attributes );
+
+			// If we found an instance, update it with the data in 'item'; if not, create an instance
+			// (unless 'options.create' is false).
+			if ( _.isObject( attributes ) ) {
+				if ( model ) {
+					model.set( model.parse ? model.parse( attributes ) : attributes, options );
+				}
+				else if ( !options || ( options && options.create !== false ) ) {
+					model = this.build( attributes, options );
+				}
+			}
+
+			return model;
+		}
+	});
+	_.extend( Backbone.RelationalModel.prototype, Backbone.Semaphore );
+	
+	/**
+	 * Override Backbone.Collection._prepareModel, so objects will be built using the correct type
+	 * if the collection.model has subModels.
+	 */
+	Backbone.Collection.prototype.__prepareModel = Backbone.Collection.prototype._prepareModel;
+	Backbone.Collection.prototype._prepareModel = function ( model, options ) {
+		options || (options = {});
+		if ( !( model instanceof Backbone.Model ) ) {
+			var attrs = model;
+			options.collection = this;
+
+			if ( typeof this.model.findOrCreate !== 'undefined' ) {
+				model = this.model.findOrCreate( attrs, options );
+			}
+			else {
+				model = new this.model( attrs, options );
+			}
+			
+			if ( !model._validate( model.attributes, options ) ) {
+				model = false;
+			}
+		}
+		else if ( !model.collection ) {
+			model.collection = this;
+		}
+		
+		return model;
+	}
+	
+	/**
+	 * Override Backbone.Collection.add, so objects fetched from the server multiple times will
+	 * update the existing Model. Also, trigger 'relational:add'.
+	 */
+	var add = Backbone.Collection.prototype.__add = Backbone.Collection.prototype.add;
+	Backbone.Collection.prototype.add = function( models, options ) {
+		options || (options = {});
+		if ( !_.isArray( models ) ) {
+			models = [ models ];
+		}
+
+		var modelsToAdd = [];
+
+		//console.debug( 'calling add on coll=%o; model=%o, options=%o', this, models, options );
+		_.each( models, function( model ) {
+			if ( !( model instanceof Backbone.Model ) ) {
+				// `_prepareModel` attempts to find `model` in Backbone.store through `findOrCreate`,
+				// and sets the new properties on it if is found. Otherwise, a new model is instantiated.
+				model = Backbone.Collection.prototype._prepareModel.call( this, model, options );
+			}
+
+			if ( model instanceof Backbone.Model && !this.get( model ) && !this.getByCid( model ) ) {
+				modelsToAdd.push( model );
+			}
+		}, this );
+
+
+		// Add 'models' in a single batch, so the original add will only be called once (and thus 'sort', etc).
+		if ( modelsToAdd.length ) {
+			add.call( this, modelsToAdd, options );
+
+			_.each( modelsToAdd, function( model ) {
+				this.trigger( 'relational:add', model, this, options );
+			}, this );
+		}
+		
+		return this;
+	};
+	
+	/**
+	 * Override 'Backbone.Collection.remove' to trigger 'relational:remove'.
+	 */
+	var remove = Backbone.Collection.prototype.__remove = Backbone.Collection.prototype.remove;
+	Backbone.Collection.prototype.remove = function( models, options ) {
+		options || (options = {});
+		if ( !_.isArray( models ) ) {
+			models = [ models ];
+		}
+		else {
+			models = models.slice( 0 );
+		}
+
+		//console.debug('calling remove on coll=%o; models=%o, options=%o', this, models, options );
+		_.each( models, function( model ) {
+				model = this.getByCid( model ) || this.get( model );
+
+				if ( model instanceof Backbone.Model ) {
+					remove.call( this, model, options );
+					this.trigger('relational:remove', model, this, options);
+				}
+			}, this );
+		
+		return this;
+	};
+
+	/**
+	 * Override 'Backbone.Collection.reset' to trigger 'relational:reset'.
+	 */
+	var reset = Backbone.Collection.prototype.__reset = Backbone.Collection.prototype.reset;
+	Backbone.Collection.prototype.reset = function( models, options ) {
+		reset.call( this, models, options );
+		this.trigger( 'relational:reset', this, options );
+
+		return this;
+	};
+
+	/**
+	 * Override 'Backbone.Collection.sort' to trigger 'relational:reset'.
+	 */
+	var sort = Backbone.Collection.prototype.__sort = Backbone.Collection.prototype.sort;
+	Backbone.Collection.prototype.sort = function( options ) {
+		sort.call( this, options );
+		this.trigger( 'relational:reset', this, options );
+
+		return this;
+	};
+	
+	/**
+	 * Override 'Backbone.Collection.trigger' so 'add', 'remove' and 'reset' events are queued until relations
+	 * are ready.
+	 */
+	var trigger = Backbone.Collection.prototype.__trigger = Backbone.Collection.prototype.trigger;
+	Backbone.Collection.prototype.trigger = function( eventName ) {
+		if ( eventName === 'add' || eventName === 'remove' || eventName === 'reset' ) {
+			var dit = this, args = arguments;
+			
+			if (eventName === 'add') {
+				args = _.toArray(args);
+				// the fourth argument in case of a regular add is the option object.
+				// we need to clone it, as it could be modified while we wait on the eventQueue to be unblocked
+				if (_.isObject(args[3])) {
+					args[3] = _.clone(args[3]);
+				}
+			}
+			
+			Backbone.Relational.eventQueue.add( function() {
+					trigger.apply( dit, args );
+				});
+		}
+		else {
+			trigger.apply( this, arguments );
+		}
+		
+		return this;
+	};
+
+	// Override .extend() to automatically call .setup()
+	Backbone.RelationalModel.extend = function( protoProps, classProps ) {
+		var child = Backbone.Model.extend.apply( this, arguments );
+		
+		child.setup( this );
+
+		return child;
+	};
+})();
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/lib/backbone.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/integ/renkan/lib/backbone.js	Wed Apr 03 18:56:34 2013 +0200
@@ -0,0 +1,1431 @@
+//     Backbone.js 0.9.2
+
+//     (c) 2010-2012 Jeremy Ashkenas, DocumentCloud Inc.
+//     Backbone may be freely distributed under the MIT license.
+//     For all details and documentation:
+//     http://backbonejs.org
+
+(function(){
+
+  // Initial Setup
+  // -------------
+
+  // Save a reference to the global object (`window` in the browser, `global`
+  // on the server).
+  var root = this;
+
+  // Save the previous value of the `Backbone` variable, so that it can be
+  // restored later on, if `noConflict` is used.
+  var previousBackbone = root.Backbone;
+
+  // Create a local reference to slice/splice.
+  var slice = Array.prototype.slice;
+  var splice = Array.prototype.splice;
+
+  // The top-level namespace. All public Backbone classes and modules will
+  // be attached to this. Exported for both CommonJS and the browser.
+  var Backbone;
+  if (typeof exports !== 'undefined') {
+    Backbone = exports;
+  } else {
+    Backbone = root.Backbone = {};
+  }
+
+  // Current version of the library. Keep in sync with `package.json`.
+  Backbone.VERSION = '0.9.2';
+
+  // Require Underscore, if we're on the server, and it's not already present.
+  var _ = root._;
+  if (!_ && (typeof require !== 'undefined')) _ = require('underscore');
+
+  // For Backbone's purposes, jQuery, Zepto, or Ender owns the `$` variable.
+  var $ = root.jQuery || root.Zepto || root.ender;
+
+  // Set the JavaScript library that will be used for DOM manipulation and
+  // Ajax calls (a.k.a. the `$` variable). By default Backbone will use: jQuery,
+  // Zepto, or Ender; but the `setDomLibrary()` method lets you inject an
+  // alternate JavaScript library (or a mock library for testing your views
+  // outside of a browser).
+  Backbone.setDomLibrary = function(lib) {
+    $ = lib;
+  };
+
+  // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable
+  // to its previous owner. Returns a reference to this Backbone object.
+  Backbone.noConflict = function() {
+    root.Backbone = previousBackbone;
+    return this;
+  };
+
+  // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option
+  // will fake `"PUT"` and `"DELETE"` requests via the `_method` parameter and
+  // set a `X-Http-Method-Override` header.
+  Backbone.emulateHTTP = false;
+
+  // Turn on `emulateJSON` to support legacy servers that can't deal with direct
+  // `application/json` requests ... will encode the body as
+  // `application/x-www-form-urlencoded` instead and will send the model in a
+  // form param named `model`.
+  Backbone.emulateJSON = false;
+
+  // Backbone.Events
+  // -----------------
+
+  // Regular expression used to split event strings
+  var eventSplitter = /\s+/;
+
+  // A module that can be mixed in to *any object* in order to provide it with
+  // custom events. You may bind with `on` or remove with `off` callback functions
+  // to an event; trigger`-ing an event fires all callbacks in succession.
+  //
+  //     var object = {};
+  //     _.extend(object, Backbone.Events);
+  //     object.on('expand', function(){ alert('expanded'); });
+  //     object.trigger('expand');
+  //
+  var Events = Backbone.Events = {
+
+    // Bind one or more space separated events, `events`, to a `callback`
+    // function. Passing `"all"` will bind the callback to all events fired.
+    on: function(events, callback, context) {
+
+      var calls, event, node, tail, list;
+      if (!callback) return this;
+      events = events.split(eventSplitter);
+      calls = this._callbacks || (this._callbacks = {});
+
+      // Create an immutable callback list, allowing traversal during
+      // modification.  The tail is an empty object that will always be used
+      // as the next node.
+      while (event = events.shift()) {
+        list = calls[event];
+        node = list ? list.tail : {};
+        node.next = tail = {};
+        node.context = context;
+        node.callback = callback;
+        calls[event] = {tail: tail, next: list ? list.next : node};
+      }
+
+      return this;
+    },
+
+    // Remove one or many callbacks. If `context` is null, removes all callbacks
+    // with that function. If `callback` is null, removes all callbacks for the
+    // event. If `events` is null, removes all bound callbacks for all events.
+    off: function(events, callback, context) {
+      var event, calls, node, tail, cb, ctx;
+
+      // No events, or removing *all* events.
+      if (!(calls = this._callbacks)) return;
+      if (!(events || callback || context)) {
+        delete this._callbacks;
+        return this;
+      }
+
+      // Loop through the listed events and contexts, splicing them out of the
+      // linked list of callbacks if appropriate.
+      events = events ? events.split(eventSplitter) : _.keys(calls);
+      while (event = events.shift()) {
+        node = calls[event];
+        delete calls[event];
+        if (!node || !(callback || context)) continue;
+        // Create a new list, omitting the indicated callbacks.
+        tail = node.tail;
+        while ((node = node.next) !== tail) {
+          cb = node.callback;
+          ctx = node.context;
+          if ((callback && cb !== callback) || (context && ctx !== context)) {
+            this.on(event, cb, ctx);
+          }
+        }
+      }
+
+      return this;
+    },
+
+    // Trigger one or many events, firing all bound callbacks. Callbacks are
+    // passed the same arguments as `trigger` is, apart from the event name
+    // (unless you're listening on `"all"`, which will cause your callback to
+    // receive the true name of the event as the first argument).
+    trigger: function(events) {
+      var event, node, calls, tail, args, all, rest;
+      if (!(calls = this._callbacks)) return this;
+      all = calls.all;
+      events = events.split(eventSplitter);
+      rest = slice.call(arguments, 1);
+
+      // For each event, walk through the linked list of callbacks twice,
+      // first to trigger the event, then to trigger any `"all"` callbacks.
+      while (event = events.shift()) {
+        if (node = calls[event]) {
+          tail = node.tail;
+          while ((node = node.next) !== tail) {
+            node.callback.apply(node.context || this, rest);
+          }
+        }
+        if (node = all) {
+          tail = node.tail;
+          args = [event].concat(rest);
+          while ((node = node.next) !== tail) {
+            node.callback.apply(node.context || this, args);
+          }
+        }
+      }
+
+      return this;
+    }
+
+  };
+
+  // Aliases for backwards compatibility.
+  Events.bind   = Events.on;
+  Events.unbind = Events.off;
+
+  // Backbone.Model
+  // --------------
+
+  // Create a new model, with defined attributes. A client id (`cid`)
+  // is automatically generated and assigned for you.
+  var Model = Backbone.Model = function(attributes, options) {
+    var defaults;
+    attributes || (attributes = {});
+    if (options && options.parse) attributes = this.parse(attributes);
+    if (defaults = getValue(this, 'defaults')) {
+      attributes = _.extend({}, defaults, attributes);
+    }
+    if (options && options.collection) this.collection = options.collection;
+    this.attributes = {};
+    this._escapedAttributes = {};
+    this.cid = _.uniqueId('c');
+    this.changed = {};
+    this._silent = {};
+    this._pending = {};
+    this.set(attributes, {silent: true});
+    // Reset change tracking.
+    this.changed = {};
+    this._silent = {};
+    this._pending = {};
+    this._previousAttributes = _.clone(this.attributes);
+    this.initialize.apply(this, arguments);
+  };
+
+  // Attach all inheritable methods to the Model prototype.
+  _.extend(Model.prototype, Events, {
+
+    // A hash of attributes whose current and previous value differ.
+    changed: null,
+
+    // A hash of attributes that have silently changed since the last time
+    // `change` was called.  Will become pending attributes on the next call.
+    _silent: null,
+
+    // A hash of attributes that have changed since the last `'change'` event
+    // began.
+    _pending: null,
+
+    // The default name for the JSON `id` attribute is `"id"`. MongoDB and
+    // CouchDB users may want to set this to `"_id"`.
+    idAttribute: 'id',
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // Return a copy of the model's `attributes` object.
+    toJSON: function(options) {
+      return _.clone(this.attributes);
+    },
+
+    // Get the value of an attribute.
+    get: function(attr) {
+      return this.attributes[attr];
+    },
+
+    // Get the HTML-escaped value of an attribute.
+    escape: function(attr) {
+      var html;
+      if (html = this._escapedAttributes[attr]) return html;
+      var val = this.get(attr);
+      return this._escapedAttributes[attr] = _.escape(val == null ? '' : '' + val);
+    },
+
+    // Returns `true` if the attribute contains a value that is not null
+    // or undefined.
+    has: function(attr) {
+      return this.get(attr) != null;
+    },
+
+    // Set a hash of model attributes on the object, firing `"change"` unless
+    // you choose to silence it.
+    set: function(key, value, options) {
+      var attrs, attr, val;
+
+      // Handle both `"key", value` and `{key: value}` -style arguments.
+      if (_.isObject(key) || key == null) {
+        attrs = key;
+        options = value;
+      } else {
+        attrs = {};
+        attrs[key] = value;
+      }
+
+      // Extract attributes and options.
+      options || (options = {});
+      if (!attrs) return this;
+      if (attrs instanceof Model) attrs = attrs.attributes;
+      if (options.unset) for (attr in attrs) attrs[attr] = void 0;
+
+      // Run validation.
+      if (!this._validate(attrs, options)) return false;
+
+      // Check for changes of `id`.
+      if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];
+
+      var changes = options.changes = {};
+      var now = this.attributes;
+      var escaped = this._escapedAttributes;
+      var prev = this._previousAttributes || {};
+
+      // For each `set` attribute...
+      for (attr in attrs) {
+        val = attrs[attr];
+
+        // If the new and current value differ, record the change.
+        if (!_.isEqual(now[attr], val) || (options.unset && _.has(now, attr))) {
+          delete escaped[attr];
+          (options.silent ? this._silent : changes)[attr] = true;
+        }
+
+        // Update or delete the current value.
+        options.unset ? delete now[attr] : now[attr] = val;
+
+        // If the new and previous value differ, record the change.  If not,
+        // then remove changes for this attribute.
+        if (!_.isEqual(prev[attr], val) || (_.has(now, attr) != _.has(prev, attr))) {
+          this.changed[attr] = val;
+          if (!options.silent) this._pending[attr] = true;
+        } else {
+          delete this.changed[attr];
+          delete this._pending[attr];
+        }
+      }
+
+      // Fire the `"change"` events.
+      if (!options.silent) this.change(options);
+      return this;
+    },
+
+    // Remove an attribute from the model, firing `"change"` unless you choose
+    // to silence it. `unset` is a noop if the attribute doesn't exist.
+    unset: function(attr, options) {
+      (options || (options = {})).unset = true;
+      return this.set(attr, null, options);
+    },
+
+    // Clear all attributes on the model, firing `"change"` unless you choose
+    // to silence it.
+    clear: function(options) {
+      (options || (options = {})).unset = true;
+      return this.set(_.clone(this.attributes), options);
+    },
+
+    // Fetch the model from the server. If the server's representation of the
+    // model differs from its current attributes, they will be overriden,
+    // triggering a `"change"` event.
+    fetch: function(options) {
+      options = options ? _.clone(options) : {};
+      var model = this;
+      var success = options.success;
+      options.success = function(resp, status, xhr) {
+        if (!model.set(model.parse(resp, xhr), options)) return false;
+        if (success) success(model, resp);
+      };
+      options.error = Backbone.wrapError(options.error, model, options);
+      return (this.sync || Backbone.sync).call(this, 'read', this, options);
+    },
+
+    // Set a hash of model attributes, and sync the model to the server.
+    // If the server returns an attributes hash that differs, the model's
+    // state will be `set` again.
+    save: function(key, value, options) {
+      var attrs, current;
+
+      // Handle both `("key", value)` and `({key: value})` -style calls.
+      if (_.isObject(key) || key == null) {
+        attrs = key;
+        options = value;
+      } else {
+        attrs = {};
+        attrs[key] = value;
+      }
+      options = options ? _.clone(options) : {};
+
+      // If we're "wait"-ing to set changed attributes, validate early.
+      if (options.wait) {
+        if (!this._validate(attrs, options)) return false;
+        current = _.clone(this.attributes);
+      }
+
+      // Regular saves `set` attributes before persisting to the server.
+      var silentOptions = _.extend({}, options, {silent: true});
+      if (attrs && !this.set(attrs, options.wait ? silentOptions : options)) {
+        return false;
+      }
+
+      // After a successful server-side save, the client is (optionally)
+      // updated with the server-side state.
+      var model = this;
+      var success = options.success;
+      options.success = function(resp, status, xhr) {
+        var serverAttrs = model.parse(resp, xhr);
+        if (options.wait) {
+          delete options.wait;
+          serverAttrs = _.extend(attrs || {}, serverAttrs);
+        }
+        if (!model.set(serverAttrs, options)) return false;
+        if (success) {
+          success(model, resp);
+        } else {
+          model.trigger('sync', model, resp, options);
+        }
+      };
+
+      // Finish configuring and sending the Ajax request.
+      options.error = Backbone.wrapError(options.error, model, options);
+      var method = this.isNew() ? 'create' : 'update';
+      var xhr = (this.sync || Backbone.sync).call(this, method, this, options);
+      if (options.wait) this.set(current, silentOptions);
+      return xhr;
+    },
+
+    // Destroy this model on the server if it was already persisted.
+    // Optimistically removes the model from its collection, if it has one.
+    // If `wait: true` is passed, waits for the server to respond before removal.
+    destroy: function(options) {
+      options = options ? _.clone(options) : {};
+      var model = this;
+      var success = options.success;
+
+      var triggerDestroy = function() {
+        model.trigger('destroy', model, model.collection, options);
+      };
+
+      if (this.isNew()) {
+        triggerDestroy();
+        return false;
+      }
+
+      options.success = function(resp) {
+        if (options.wait) triggerDestroy();
+        if (success) {
+          success(model, resp);
+        } else {
+          model.trigger('sync', model, resp, options);
+        }
+      };
+
+      options.error = Backbone.wrapError(options.error, model, options);
+      var xhr = (this.sync || Backbone.sync).call(this, 'delete', this, options);
+      if (!options.wait) triggerDestroy();
+      return xhr;
+    },
+
+    // Default URL for the model's representation on the server -- if you're
+    // using Backbone's restful methods, override this to change the endpoint
+    // that will be called.
+    url: function() {
+      var base = getValue(this, 'urlRoot') || getValue(this.collection, 'url') || urlError();
+      if (this.isNew()) return base;
+      return base + (base.charAt(base.length - 1) == '/' ? '' : '/') + encodeURIComponent(this.id);
+    },
+
+    // **parse** converts a response into the hash of attributes to be `set` on
+    // the model. The default implementation is just to pass the response along.
+    parse: function(resp, xhr) {
+      return resp;
+    },
+
+    // Create a new model with identical attributes to this one.
+    clone: function() {
+      return new this.constructor(this.attributes);
+    },
+
+    // A model is new if it has never been saved to the server, and lacks an id.
+    isNew: function() {
+      return this.id == null;
+    },
+
+    // Call this method to manually fire a `"change"` event for this model and
+    // a `"change:attribute"` event for each changed attribute.
+    // Calling this will cause all objects observing the model to update.
+    change: function(options) {
+      options || (options = {});
+      var changing = this._changing;
+      this._changing = true;
+
+      // Silent changes become pending changes.
+      for (var attr in this._silent) this._pending[attr] = true;
+
+      // Silent changes are triggered.
+      var changes = _.extend({}, options.changes, this._silent);
+      this._silent = {};
+      for (var attr in changes) {
+        this.trigger('change:' + attr, this, this.get(attr), options);
+      }
+      if (changing) return this;
+
+      // Continue firing `"change"` events while there are pending changes.
+      while (!_.isEmpty(this._pending)) {
+        this._pending = {};
+        this.trigger('change', this, options);
+        // Pending and silent changes still remain.
+        for (var attr in this.changed) {
+          if (this._pending[attr] || this._silent[attr]) continue;
+          delete this.changed[attr];
+        }
+        this._previousAttributes = _.clone(this.attributes);
+      }
+
+      this._changing = false;
+      return this;
+    },
+
+    // Determine if the model has changed since the last `"change"` event.
+    // If you specify an attribute name, determine if that attribute has changed.
+    hasChanged: function(attr) {
+      if (!arguments.length) return !_.isEmpty(this.changed);
+      return _.has(this.changed, attr);
+    },
+
+    // Return an object containing all the attributes that have changed, or
+    // false if there are no changed attributes. Useful for determining what
+    // parts of a view need to be updated and/or what attributes need to be
+    // persisted to the server. Unset attributes will be set to undefined.
+    // You can also pass an attributes object to diff against the model,
+    // determining if there *would be* a change.
+    changedAttributes: function(diff) {
+      if (!diff) return this.hasChanged() ? _.clone(this.changed) : false;
+      var val, changed = false, old = this._previousAttributes;
+      for (var attr in diff) {
+        if (_.isEqual(old[attr], (val = diff[attr]))) continue;
+        (changed || (changed = {}))[attr] = val;
+      }
+      return changed;
+    },
+
+    // Get the previous value of an attribute, recorded at the time the last
+    // `"change"` event was fired.
+    previous: function(attr) {
+      if (!arguments.length || !this._previousAttributes) return null;
+      return this._previousAttributes[attr];
+    },
+
+    // Get all of the attributes of the model at the time of the previous
+    // `"change"` event.
+    previousAttributes: function() {
+      return _.clone(this._previousAttributes);
+    },
+
+    // Check if the model is currently in a valid state. It's only possible to
+    // get into an *invalid* state if you're using silent changes.
+    isValid: function() {
+      return !this.validate(this.attributes);
+    },
+
+    // Run validation against the next complete set of model attributes,
+    // returning `true` if all is well. If a specific `error` callback has
+    // been passed, call that instead of firing the general `"error"` event.
+    _validate: function(attrs, options) {
+      if (options.silent || !this.validate) return true;
+      attrs = _.extend({}, this.attributes, attrs);
+      var error = this.validate(attrs, options);
+      if (!error) return true;
+      if (options && options.error) {
+        options.error(this, error, options);
+      } else {
+        this.trigger('error', this, error, options);
+      }
+      return false;
+    }
+
+  });
+
+  // Backbone.Collection
+  // -------------------
+
+  // Provides a standard collection class for our sets of models, ordered
+  // or unordered. If a `comparator` is specified, the Collection will maintain
+  // its models in sort order, as they're added and removed.
+  var Collection = Backbone.Collection = function(models, options) {
+    options || (options = {});
+    if (options.model) this.model = options.model;
+    if (options.comparator) this.comparator = options.comparator;
+    this._reset();
+    this.initialize.apply(this, arguments);
+    if (models) this.reset(models, {silent: true, parse: options.parse});
+  };
+
+  // Define the Collection's inheritable methods.
+  _.extend(Collection.prototype, Events, {
+
+    // The default model for a collection is just a **Backbone.Model**.
+    // This should be overridden in most cases.
+    model: Model,
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // The JSON representation of a Collection is an array of the
+    // models' attributes.
+    toJSON: function(options) {
+      return this.map(function(model){ return model.toJSON(options); });
+    },
+
+    // Add a model, or list of models to the set. Pass **silent** to avoid
+    // firing the `add` event for every new model.
+    add: function(models, options) {
+      var i, index, length, model, cid, id, cids = {}, ids = {}, dups = [];
+      options || (options = {});
+      models = _.isArray(models) ? models.slice() : [models];
+
+      // Begin by turning bare objects into model references, and preventing
+      // invalid models or duplicate models from being added.
+      for (i = 0, length = models.length; i < length; i++) {
+        if (!(model = models[i] = this._prepareModel(models[i], options))) {
+          throw new Error("Can't add an invalid model to a collection");
+        }
+        cid = model.cid;
+        id = model.id;
+        if (cids[cid] || this._byCid[cid] || ((id != null) && (ids[id] || this._byId[id]))) {
+          dups.push(i);
+          continue;
+        }
+        cids[cid] = ids[id] = model;
+      }
+
+      // Remove duplicates.
+      i = dups.length;
+      while (i--) {
+        models.splice(dups[i], 1);
+      }
+
+      // Listen to added models' events, and index models for lookup by
+      // `id` and by `cid`.
+      for (i = 0, length = models.length; i < length; i++) {
+        (model = models[i]).on('all', this._onModelEvent, this);
+        this._byCid[model.cid] = model;
+        if (model.id != null) this._byId[model.id] = model;
+      }
+
+      // Insert models into the collection, re-sorting if needed, and triggering
+      // `add` events unless silenced.
+      this.length += length;
+      index = options.at != null ? options.at : this.models.length;
+      splice.apply(this.models, [index, 0].concat(models));
+      if (this.comparator) this.sort({silent: true});
+      if (options.silent) return this;
+      for (i = 0, length = this.models.length; i < length; i++) {
+        if (!cids[(model = this.models[i]).cid]) continue;
+        options.index = i;
+        model.trigger('add', model, this, options);
+      }
+      return this;
+    },
+
+    // Remove a model, or a list of models from the set. Pass silent to avoid
+    // firing the `remove` event for every model removed.
+    remove: function(models, options) {
+      var i, l, index, model;
+      options || (options = {});
+      models = _.isArray(models) ? models.slice() : [models];
+      for (i = 0, l = models.length; i < l; i++) {
+        model = this.getByCid(models[i]) || this.get(models[i]);
+        if (!model) continue;
+        delete this._byId[model.id];
+        delete this._byCid[model.cid];
+        index = this.indexOf(model);
+        this.models.splice(index, 1);
+        this.length--;
+        if (!options.silent) {
+          options.index = index;
+          model.trigger('remove', model, this, options);
+        }
+        this._removeReference(model);
+      }
+      return this;
+    },
+
+    // Add a model to the end of the collection.
+    push: function(model, options) {
+      model = this._prepareModel(model, options);
+      this.add(model, options);
+      return model;
+    },
+
+    // Remove a model from the end of the collection.
+    pop: function(options) {
+      var model = this.at(this.length - 1);
+      this.remove(model, options);
+      return model;
+    },
+
+    // Add a model to the beginning of the collection.
+    unshift: function(model, options) {
+      model = this._prepareModel(model, options);
+      this.add(model, _.extend({at: 0}, options));
+      return model;
+    },
+
+    // Remove a model from the beginning of the collection.
+    shift: function(options) {
+      var model = this.at(0);
+      this.remove(model, options);
+      return model;
+    },
+
+    // Get a model from the set by id.
+    get: function(id) {
+      if (id == null) return void 0;
+      return this._byId[id.id != null ? id.id : id];
+    },
+
+    // Get a model from the set by client id.
+    getByCid: function(cid) {
+      return cid && this._byCid[cid.cid || cid];
+    },
+
+    // Get the model at the given index.
+    at: function(index) {
+      return this.models[index];
+    },
+
+    // Return models with matching attributes. Useful for simple cases of `filter`.
+    where: function(attrs) {
+      if (_.isEmpty(attrs)) return [];
+      return this.filter(function(model) {
+        for (var key in attrs) {
+          if (attrs[key] !== model.get(key)) return false;
+        }
+        return true;
+      });
+    },
+
+    // Force the collection to re-sort itself. You don't need to call this under
+    // normal circumstances, as the set will maintain sort order as each item
+    // is added.
+    sort: function(options) {
+      options || (options = {});
+      if (!this.comparator) throw new Error('Cannot sort a set without a comparator');
+      var boundComparator = _.bind(this.comparator, this);
+      if (this.comparator.length == 1) {
+        this.models = this.sortBy(boundComparator);
+      } else {
+        this.models.sort(boundComparator);
+      }
+      if (!options.silent) this.trigger('reset', this, options);
+      return this;
+    },
+
+    // Pluck an attribute from each model in the collection.
+    pluck: function(attr) {
+      return _.map(this.models, function(model){ return model.get(attr); });
+    },
+
+    // When you have more items than you want to add or remove individually,
+    // you can reset the entire set with a new list of models, without firing
+    // any `add` or `remove` events. Fires `reset` when finished.
+    reset: function(models, options) {
+      models  || (models = []);
+      options || (options = {});
+      for (var i = 0, l = this.models.length; i < l; i++) {
+        this._removeReference(this.models[i]);
+      }
+      this._reset();
+      this.add(models, _.extend({silent: true}, options));
+      if (!options.silent) this.trigger('reset', this, options);
+      return this;
+    },
+
+    // Fetch the default set of models for this collection, resetting the
+    // collection when they arrive. If `add: true` is passed, appends the
+    // models to the collection instead of resetting.
+    fetch: function(options) {
+      options = options ? _.clone(options) : {};
+      if (options.parse === undefined) options.parse = true;
+      var collection = this;
+      var success = options.success;
+      options.success = function(resp, status, xhr) {
+        collection[options.add ? 'add' : 'reset'](collection.parse(resp, xhr), options);
+        if (success) success(collection, resp);
+      };
+      options.error = Backbone.wrapError(options.error, collection, options);
+      return (this.sync || Backbone.sync).call(this, 'read', this, options);
+    },
+
+    // Create a new instance of a model in this collection. Add the model to the
+    // collection immediately, unless `wait: true` is passed, in which case we
+    // wait for the server to agree.
+    create: function(model, options) {
+      var coll = this;
+      options = options ? _.clone(options) : {};
+      model = this._prepareModel(model, options);
+      if (!model) return false;
+      if (!options.wait) coll.add(model, options);
+      var success = options.success;
+      options.success = function(nextModel, resp, xhr) {
+        if (options.wait) coll.add(nextModel, options);
+        if (success) {
+          success(nextModel, resp);
+        } else {
+          nextModel.trigger('sync', model, resp, options);
+        }
+      };
+      model.save(null, options);
+      return model;
+    },
+
+    // **parse** converts a response into a list of models to be added to the
+    // collection. The default implementation is just to pass it through.
+    parse: function(resp, xhr) {
+      return resp;
+    },
+
+    // Proxy to _'s chain. Can't be proxied the same way the rest of the
+    // underscore methods are proxied because it relies on the underscore
+    // constructor.
+    chain: function () {
+      return _(this.models).chain();
+    },
+
+    // Reset all internal state. Called when the collection is reset.
+    _reset: function(options) {
+      this.length = 0;
+      this.models = [];
+      this._byId  = {};
+      this._byCid = {};
+    },
+
+    // Prepare a model or hash of attributes to be added to this collection.
+    _prepareModel: function(model, options) {
+      options || (options = {});
+      if (!(model instanceof Model)) {
+        var attrs = model;
+        options.collection = this;
+        model = new this.model(attrs, options);
+        if (!model._validate(model.attributes, options)) model = false;
+      } else if (!model.collection) {
+        model.collection = this;
+      }
+      return model;
+    },
+
+    // Internal method to remove a model's ties to a collection.
+    _removeReference: function(model) {
+      if (this == model.collection) {
+        delete model.collection;
+      }
+      model.off('all', this._onModelEvent, this);
+    },
+
+    // Internal method called every time a model in the set fires an event.
+    // Sets need to update their indexes when models change ids. All other
+    // events simply proxy through. "add" and "remove" events that originate
+    // in other collections are ignored.
+    _onModelEvent: function(event, model, collection, options) {
+      if ((event == 'add' || event == 'remove') && collection != this) return;
+      if (event == 'destroy') {
+        this.remove(model, options);
+      }
+      if (model && event === 'change:' + model.idAttribute) {
+        delete this._byId[model.previous(model.idAttribute)];
+        this._byId[model.id] = model;
+      }
+      this.trigger.apply(this, arguments);
+    }
+
+  });
+
+  // Underscore methods that we want to implement on the Collection.
+  var methods = ['forEach', 'each', 'map', 'reduce', 'reduceRight', 'find',
+    'detect', 'filter', 'select', 'reject', 'every', 'all', 'some', 'any',
+    'include', 'contains', 'invoke', 'max', 'min', 'sortBy', 'sortedIndex',
+    'toArray', 'size', 'first', 'initial', 'rest', 'last', 'without', 'indexOf',
+    'shuffle', 'lastIndexOf', 'isEmpty', 'groupBy'];
+
+  // Mix in each Underscore method as a proxy to `Collection#models`.
+  _.each(methods, function(method) {
+    Collection.prototype[method] = function() {
+      return _[method].apply(_, [this.models].concat(_.toArray(arguments)));
+    };
+  });
+
+  // Backbone.Router
+  // -------------------
+
+  // Routers map faux-URLs to actions, and fire events when routes are
+  // matched. Creating a new one sets its `routes` hash, if not set statically.
+  var Router = Backbone.Router = function(options) {
+    options || (options = {});
+    if (options.routes) this.routes = options.routes;
+    this._bindRoutes();
+    this.initialize.apply(this, arguments);
+  };
+
+  // Cached regular expressions for matching named param parts and splatted
+  // parts of route strings.
+  var namedParam    = /:\w+/g;
+  var splatParam    = /\*\w+/g;
+  var escapeRegExp  = /[-[\]{}()+?.,\\^$|#\s]/g;
+
+  // Set up all inheritable **Backbone.Router** properties and methods.
+  _.extend(Router.prototype, Events, {
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // Manually bind a single named route to a callback. For example:
+    //
+    //     this.route('search/:query/p:num', 'search', function(query, num) {
+    //       ...
+    //     });
+    //
+    route: function(route, name, callback) {
+      Backbone.history || (Backbone.history = new History);
+      if (!_.isRegExp(route)) route = this._routeToRegExp(route);
+      if (!callback) callback = this[name];
+      Backbone.history.route(route, _.bind(function(fragment) {
+        var args = this._extractParameters(route, fragment);
+        callback && callback.apply(this, args);
+        this.trigger.apply(this, ['route:' + name].concat(args));
+        Backbone.history.trigger('route', this, name, args);
+      }, this));
+      return this;
+    },
+
+    // Simple proxy to `Backbone.history` to save a fragment into the history.
+    navigate: function(fragment, options) {
+      Backbone.history.navigate(fragment, options);
+    },
+
+    // Bind all defined routes to `Backbone.history`. We have to reverse the
+    // order of the routes here to support behavior where the most general
+    // routes can be defined at the bottom of the route map.
+    _bindRoutes: function() {
+      if (!this.routes) return;
+      var routes = [];
+      for (var route in this.routes) {
+        routes.unshift([route, this.routes[route]]);
+      }
+      for (var i = 0, l = routes.length; i < l; i++) {
+        this.route(routes[i][0], routes[i][1], this[routes[i][1]]);
+      }
+    },
+
+    // Convert a route string into a regular expression, suitable for matching
+    // against the current location hash.
+    _routeToRegExp: function(route) {
+      route = route.replace(escapeRegExp, '\\$&')
+                   .replace(namedParam, '([^\/]+)')
+                   .replace(splatParam, '(.*?)');
+      return new RegExp('^' + route + '$');
+    },
+
+    // Given a route, and a URL fragment that it matches, return the array of
+    // extracted parameters.
+    _extractParameters: function(route, fragment) {
+      return route.exec(fragment).slice(1);
+    }
+
+  });
+
+  // Backbone.History
+  // ----------------
+
+  // Handles cross-browser history management, based on URL fragments. If the
+  // browser does not support `onhashchange`, falls back to polling.
+  var History = Backbone.History = function() {
+    this.handlers = [];
+    _.bindAll(this, 'checkUrl');
+  };
+
+  // Cached regex for cleaning leading hashes and slashes .
+  var routeStripper = /^[#\/]/;
+
+  // Cached regex for detecting MSIE.
+  var isExplorer = /msie [\w.]+/;
+
+  // Has the history handling already been started?
+  History.started = false;
+
+  // Set up all inheritable **Backbone.History** properties and methods.
+  _.extend(History.prototype, Events, {
+
+    // The default interval to poll for hash changes, if necessary, is
+    // twenty times a second.
+    interval: 50,
+
+    // Gets the true hash value. Cannot use location.hash directly due to bug
+    // in Firefox where location.hash will always be decoded.
+    getHash: function(windowOverride) {
+      var loc = windowOverride ? windowOverride.location : window.location;
+      var match = loc.href.match(/#(.*)$/);
+      return match ? match[1] : '';
+    },
+
+    // Get the cross-browser normalized URL fragment, either from the URL,
+    // the hash, or the override.
+    getFragment: function(fragment, forcePushState) {
+      if (fragment == null) {
+        if (this._hasPushState || forcePushState) {
+          fragment = window.location.pathname;
+          var search = window.location.search;
+          if (search) fragment += search;
+        } else {
+          fragment = this.getHash();
+        }
+      }
+      if (!fragment.indexOf(this.options.root)) fragment = fragment.substr(this.options.root.length);
+      return fragment.replace(routeStripper, '');
+    },
+
+    // Start the hash change handling, returning `true` if the current URL matches
+    // an existing route, and `false` otherwise.
+    start: function(options) {
+      if (History.started) throw new Error("Backbone.history has already been started");
+      History.started = true;
+
+      // Figure out the initial configuration. Do we need an iframe?
+      // Is pushState desired ... is it available?
+      this.options          = _.extend({}, {root: '/'}, this.options, options);
+      this._wantsHashChange = this.options.hashChange !== false;
+      this._wantsPushState  = !!this.options.pushState;
+      this._hasPushState    = !!(this.options.pushState && window.history && window.history.pushState);
+      var fragment          = this.getFragment();
+      var docMode           = document.documentMode;
+      var oldIE             = (isExplorer.exec(navigator.userAgent.toLowerCase()) && (!docMode || docMode <= 7));
+
+      if (oldIE) {
+        this.iframe = $('<iframe src="javascript:0" tabindex="-1" />').hide().appendTo('body')[0].contentWindow;
+        this.navigate(fragment);
+      }
+
+      // Depending on whether we're using pushState or hashes, and whether
+      // 'onhashchange' is supported, determine how we check the URL state.
+      if (this._hasPushState) {
+        $(window).bind('popstate', this.checkUrl);
+      } else if (this._wantsHashChange && ('onhashchange' in window) && !oldIE) {
+        $(window).bind('hashchange', this.checkUrl);
+      } else if (this._wantsHashChange) {
+        this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
+      }
+
+      // Determine if we need to change the base url, for a pushState link
+      // opened by a non-pushState browser.
+      this.fragment = fragment;
+      var loc = window.location;
+      var atRoot  = loc.pathname == this.options.root;
+
+      // If we've started off with a route from a `pushState`-enabled browser,
+      // but we're currently in a browser that doesn't support it...
+      if (this._wantsHashChange && this._wantsPushState && !this._hasPushState && !atRoot) {
+        this.fragment = this.getFragment(null, true);
+        window.location.replace(this.options.root + '#' + this.fragment);
+        // Return immediately as browser will do redirect to new url
+        return true;
+
+      // Or if we've started out with a hash-based route, but we're currently
+      // in a browser where it could be `pushState`-based instead...
+      } else if (this._wantsPushState && this._hasPushState && atRoot && loc.hash) {
+        this.fragment = this.getHash().replace(routeStripper, '');
+        window.history.replaceState({}, document.title, loc.protocol + '//' + loc.host + this.options.root + this.fragment);
+      }
+
+      if (!this.options.silent) {
+        return this.loadUrl();
+      }
+    },
+
+    // Disable Backbone.history, perhaps temporarily. Not useful in a real app,
+    // but possibly useful for unit testing Routers.
+    stop: function() {
+      $(window).unbind('popstate', this.checkUrl).unbind('hashchange', this.checkUrl);
+      clearInterval(this._checkUrlInterval);
+      History.started = false;
+    },
+
+    // Add a route to be tested when the fragment changes. Routes added later
+    // may override previous routes.
+    route: function(route, callback) {
+      this.handlers.unshift({route: route, callback: callback});
+    },
+
+    // Checks the current URL to see if it has changed, and if it has,
+    // calls `loadUrl`, normalizing across the hidden iframe.
+    checkUrl: function(e) {
+      var current = this.getFragment();
+      if (current == this.fragment && this.iframe) current = this.getFragment(this.getHash(this.iframe));
+      if (current == this.fragment) return false;
+      if (this.iframe) this.navigate(current);
+      this.loadUrl() || this.loadUrl(this.getHash());
+    },
+
+    // Attempt to load the current URL fragment. If a route succeeds with a
+    // match, returns `true`. If no defined routes matches the fragment,
+    // returns `false`.
+    loadUrl: function(fragmentOverride) {
+      var fragment = this.fragment = this.getFragment(fragmentOverride);
+      var matched = _.any(this.handlers, function(handler) {
+        if (handler.route.test(fragment)) {
+          handler.callback(fragment);
+          return true;
+        }
+      });
+      return matched;
+    },
+
+    // Save a fragment into the hash history, or replace the URL state if the
+    // 'replace' option is passed. You are responsible for properly URL-encoding
+    // the fragment in advance.
+    //
+    // The options object can contain `trigger: true` if you wish to have the
+    // route callback be fired (not usually desirable), or `replace: true`, if
+    // you wish to modify the current URL without adding an entry to the history.
+    navigate: function(fragment, options) {
+      if (!History.started) return false;
+      if (!options || options === true) options = {trigger: options};
+      var frag = (fragment || '').replace(routeStripper, '');
+      if (this.fragment == frag) return;
+
+      // If pushState is available, we use it to set the fragment as a real URL.
+      if (this._hasPushState) {
+        if (frag.indexOf(this.options.root) != 0) frag = this.options.root + frag;
+        this.fragment = frag;
+        window.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, frag);
+
+      // If hash changes haven't been explicitly disabled, update the hash
+      // fragment to store history.
+      } else if (this._wantsHashChange) {
+        this.fragment = frag;
+        this._updateHash(window.location, frag, options.replace);
+        if (this.iframe && (frag != this.getFragment(this.getHash(this.iframe)))) {
+          // Opening and closing the iframe tricks IE7 and earlier to push a history entry on hash-tag change.
+          // When replace is true, we don't want this.
+          if(!options.replace) this.iframe.document.open().close();
+          this._updateHash(this.iframe.location, frag, options.replace);
+        }
+
+      // If you've told us that you explicitly don't want fallback hashchange-
+      // based history, then `navigate` becomes a page refresh.
+      } else {
+        window.location.assign(this.options.root + fragment);
+      }
+      if (options.trigger) this.loadUrl(fragment);
+    },
+
+    // Update the hash location, either replacing the current entry, or adding
+    // a new one to the browser history.
+    _updateHash: function(location, fragment, replace) {
+      if (replace) {
+        location.replace(location.toString().replace(/(javascript:|#).*$/, '') + '#' + fragment);
+      } else {
+        location.hash = fragment;
+      }
+    }
+  });
+
+  // Backbone.View
+  // -------------
+
+  // Creating a Backbone.View creates its initial element outside of the DOM,
+  // if an existing element is not provided...
+  var View = Backbone.View = function(options) {
+    this.cid = _.uniqueId('view');
+    this._configure(options || {});
+    this._ensureElement();
+    this.initialize.apply(this, arguments);
+    this.delegateEvents();
+  };
+
+  // Cached regex to split keys for `delegate`.
+  var delegateEventSplitter = /^(\S+)\s*(.*)$/;
+
+  // List of view options to be merged as properties.
+  var viewOptions = ['model', 'collection', 'el', 'id', 'attributes', 'className', 'tagName'];
+
+  // Set up all inheritable **Backbone.View** properties and methods.
+  _.extend(View.prototype, Events, {
+
+    // The default `tagName` of a View's element is `"div"`.
+    tagName: 'div',
+
+    // jQuery delegate for element lookup, scoped to DOM elements within the
+    // current view. This should be prefered to global lookups where possible.
+    $: function(selector) {
+      return this.$el.find(selector);
+    },
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // **render** is the core function that your view should override, in order
+    // to populate its element (`this.el`), with the appropriate HTML. The
+    // convention is for **render** to always return `this`.
+    render: function() {
+      return this;
+    },
+
+    // Remove this view from the DOM. Note that the view isn't present in the
+    // DOM by default, so calling this method may be a no-op.
+    remove: function() {
+      this.$el.remove();
+      return this;
+    },
+
+    // For small amounts of DOM Elements, where a full-blown template isn't
+    // needed, use **make** to manufacture elements, one at a time.
+    //
+    //     var el = this.make('li', {'class': 'row'}, this.model.escape('title'));
+    //
+    make: function(tagName, attributes, content) {
+      var el = document.createElement(tagName);
+      if (attributes) $(el).attr(attributes);
+      if (content) $(el).html(content);
+      return el;
+    },
+
+    // Change the view's element (`this.el` property), including event
+    // re-delegation.
+    setElement: function(element, delegate) {
+      if (this.$el) this.undelegateEvents();
+      this.$el = (element instanceof $) ? element : $(element);
+      this.el = this.$el[0];
+      if (delegate !== false) this.delegateEvents();
+      return this;
+    },
+
+    // Set callbacks, where `this.events` is a hash of
+    //
+    // *{"event selector": "callback"}*
+    //
+    //     {
+    //       'mousedown .title':  'edit',
+    //       'click .button':     'save'
+    //       'click .open':       function(e) { ... }
+    //     }
+    //
+    // pairs. Callbacks will be bound to the view, with `this` set properly.
+    // Uses event delegation for efficiency.
+    // Omitting the selector binds the event to `this.el`.
+    // This only works for delegate-able events: not `focus`, `blur`, and
+    // not `change`, `submit`, and `reset` in Internet Explorer.
+    delegateEvents: function(events) {
+      if (!(events || (events = getValue(this, 'events')))) return;
+      this.undelegateEvents();
+      for (var key in events) {
+        var method = events[key];
+        if (!_.isFunction(method)) method = this[events[key]];
+        if (!method) throw new Error('Method "' + events[key] + '" does not exist');
+        var match = key.match(delegateEventSplitter);
+        var eventName = match[1], selector = match[2];
+        method = _.bind(method, this);
+        eventName += '.delegateEvents' + this.cid;
+        if (selector === '') {
+          this.$el.bind(eventName, method);
+        } else {
+          this.$el.delegate(selector, eventName, method);
+        }
+      }
+    },
+
+    // Clears all callbacks previously bound to the view with `delegateEvents`.
+    // You usually don't need to use this, but may wish to if you have multiple
+    // Backbone views attached to the same DOM element.
+    undelegateEvents: function() {
+      this.$el.unbind('.delegateEvents' + this.cid);
+    },
+
+    // Performs the initial configuration of a View with a set of options.
+    // Keys with special meaning *(model, collection, id, className)*, are
+    // attached directly to the view.
+    _configure: function(options) {
+      if (this.options) options = _.extend({}, this.options, options);
+      for (var i = 0, l = viewOptions.length; i < l; i++) {
+        var attr = viewOptions[i];
+        if (options[attr]) this[attr] = options[attr];
+      }
+      this.options = options;
+    },
+
+    // Ensure that the View has a DOM element to render into.
+    // If `this.el` is a string, pass it through `$()`, take the first
+    // matching element, and re-assign it to `el`. Otherwise, create
+    // an element from the `id`, `className` and `tagName` properties.
+    _ensureElement: function() {
+      if (!this.el) {
+        var attrs = getValue(this, 'attributes') || {};
+        if (this.id) attrs.id = this.id;
+        if (this.className) attrs['class'] = this.className;
+        this.setElement(this.make(this.tagName, attrs), false);
+      } else {
+        this.setElement(this.el, false);
+      }
+    }
+
+  });
+
+  // The self-propagating extend function that Backbone classes use.
+  var extend = function (protoProps, classProps) {
+    var child = inherits(this, protoProps, classProps);
+    child.extend = this.extend;
+    return child;
+  };
+
+  // Set up inheritance for the model, collection, and view.
+  Model.extend = Collection.extend = Router.extend = View.extend = extend;
+
+  // Backbone.sync
+  // -------------
+
+  // Map from CRUD to HTTP for our default `Backbone.sync` implementation.
+  var methodMap = {
+    'create': 'POST',
+    'update': 'PUT',
+    'delete': 'DELETE',
+    'read':   'GET'
+  };
+
+  // Override this function to change the manner in which Backbone persists
+  // models to the server. You will be passed the type of request, and the
+  // model in question. By default, makes a RESTful Ajax request
+  // to the model's `url()`. Some possible customizations could be:
+  //
+  // * Use `setTimeout` to batch rapid-fire updates into a single request.
+  // * Send up the models as XML instead of JSON.
+  // * Persist models via WebSockets instead of Ajax.
+  //
+  // Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests
+  // as `POST`, with a `_method` parameter containing the true HTTP method,
+  // as well as all requests with the body as `application/x-www-form-urlencoded`
+  // instead of `application/json` with the model in a param named `model`.
+  // Useful when interfacing with server-side languages like **PHP** that make
+  // it difficult to read the body of `PUT` requests.
+  Backbone.sync = function(method, model, options) {
+    var type = methodMap[method];
+
+    // Default options, unless specified.
+    options || (options = {});
+
+    // Default JSON-request options.
+    var params = {type: type, dataType: 'json'};
+
+    // Ensure that we have a URL.
+    if (!options.url) {
+      params.url = getValue(model, 'url') || urlError();
+    }
+
+    // Ensure that we have the appropriate request data.
+    if (!options.data && model && (method == 'create' || method == 'update')) {
+      params.contentType = 'application/json';
+      params.data = JSON.stringify(model.toJSON());
+    }
+
+    // For older servers, emulate JSON by encoding the request into an HTML-form.
+    if (Backbone.emulateJSON) {
+      params.contentType = 'application/x-www-form-urlencoded';
+      params.data = params.data ? {model: params.data} : {};
+    }
+
+    // For older servers, emulate HTTP by mimicking the HTTP method with `_method`
+    // And an `X-HTTP-Method-Override` header.
+    if (Backbone.emulateHTTP) {
+      if (type === 'PUT' || type === 'DELETE') {
+        if (Backbone.emulateJSON) params.data._method = type;
+        params.type = 'POST';
+        params.beforeSend = function(xhr) {
+          xhr.setRequestHeader('X-HTTP-Method-Override', type);
+        };
+      }
+    }
+
+    // Don't process data on a non-GET request.
+    if (params.type !== 'GET' && !Backbone.emulateJSON) {
+      params.processData = false;
+    }
+
+    // Make the request, allowing the user to override any Ajax options.
+    return $.ajax(_.extend(params, options));
+  };
+
+  // Wrap an optional error callback with a fallback error event.
+  Backbone.wrapError = function(onError, originalModel, options) {
+    return function(model, resp) {
+      resp = model === originalModel ? resp : model;
+      if (onError) {
+        onError(originalModel, resp, options);
+      } else {
+        originalModel.trigger('error', originalModel, resp, options);
+      }
+    };
+  };
+
+  // Helpers
+  // -------
+
+  // Shared empty constructor function to aid in prototype-chain creation.
+  var ctor = function(){};
+
+  // Helper function to correctly set up the prototype chain, for subclasses.
+  // Similar to `goog.inherits`, but uses a hash of prototype properties and
+  // class properties to be extended.
+  var inherits = function(parent, protoProps, staticProps) {
+    var child;
+
+    // The constructor function for the new subclass is either defined by you
+    // (the "constructor" property in your `extend` definition), or defaulted
+    // by us to simply call the parent's constructor.
+    if (protoProps && protoProps.hasOwnProperty('constructor')) {
+      child = protoProps.constructor;
+    } else {
+      child = function(){ parent.apply(this, arguments); };
+    }
+
+    // Inherit class (static) properties from parent.
+    _.extend(child, parent);
+
+    // Set the prototype chain to inherit from `parent`, without calling
+    // `parent`'s constructor function.
+    ctor.prototype = parent.prototype;
+    child.prototype = new ctor();
+
+    // Add prototype properties (instance properties) to the subclass,
+    // if supplied.
+    if (protoProps) _.extend(child.prototype, protoProps);
+
+    // Add static properties to the constructor function, if supplied.
+    if (staticProps) _.extend(child, staticProps);
+
+    // Correctly set child's `prototype.constructor`.
+    child.prototype.constructor = child;
+
+    // Set a convenience property in case the parent's prototype is needed later.
+    child.__super__ = parent.prototype;
+
+    return child;
+  };
+
+  // Helper function to get a value from a Backbone object as a property
+  // or as a function.
+  var getValue = function(object, prop) {
+    if (!(object && object[prop])) return null;
+    return _.isFunction(object[prop]) ? object[prop]() : object[prop];
+  };
+
+  // Throw an error when a URL is needed, and none is supplied.
+  var urlError = function() {
+    throw new Error('A "url" property or function must be specified');
+  };
+
+}).call(this);
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/lib/jquery.min.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/integ/renkan/lib/jquery.min.js	Wed Apr 03 18:56:34 2013 +0200
@@ -0,0 +1,5 @@
+/*! jQuery v1.9.1 | (c) 2005, 2012 jQuery Foundation, Inc. | jquery.org/license
+//@ sourceMappingURL=jquery.min.map
+*/(function(e,t){var n,r,i=typeof t,o=e.document,a=e.location,s=e.jQuery,u=e.$,l={},c=[],p="1.9.1",f=c.concat,d=c.push,h=c.slice,g=c.indexOf,m=l.toString,y=l.hasOwnProperty,v=p.trim,b=function(e,t){return new b.fn.init(e,t,r)},x=/[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/.source,w=/\S+/g,T=/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,N=/^(?:(<[\w\W]+>)[^>]*|#([\w-]*))$/,C=/^<(\w+)\s*\/?>(?:<\/\1>|)$/,k=/^[\],:{}\s]*$/,E=/(?:^|:|,)(?:\s*\[)+/g,S=/\\(?:["\\\/bfnrt]|u[\da-fA-F]{4})/g,A=/"[^"\\\r\n]*"|true|false|null|-?(?:\d+\.|)\d+(?:[eE][+-]?\d+|)/g,j=/^-ms-/,D=/-([\da-z])/gi,L=function(e,t){return t.toUpperCase()},H=function(e){(o.addEventListener||"load"===e.type||"complete"===o.readyState)&&(q(),b.ready())},q=function(){o.addEventListener?(o.removeEventListener("DOMContentLoaded",H,!1),e.removeEventListener("load",H,!1)):(o.detachEvent("onreadystatechange",H),e.detachEvent("onload",H))};b.fn=b.prototype={jquery:p,constructor:b,init:function(e,n,r){var i,a;if(!e)return this;if("string"==typeof 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diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/lib/jquery.mousewheel.min.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/integ/renkan/lib/jquery.mousewheel.min.js	Wed Apr 03 18:56:34 2013 +0200
@@ -0,0 +1,12 @@
+/*! Copyright (c) 2011 Brandon Aaron (http://brandonaaron.net)
+ * Licensed under the MIT License (LICENSE.txt).
+ *
+ * Thanks to: http://adomas.org/javascript-mouse-wheel/ for some pointers.
+ * Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix.
+ * Thanks to: Seamus Leahy for adding deltaX and deltaY
+ *
+ * Version: 3.0.6
+ * 
+ * Requires: 1.2.2+
+ */
+(function(a){function d(b){var c=b||window.event,d=[].slice.call(arguments,1),e=0,f=!0,g=0,h=0;return b=a.event.fix(c),b.type="mousewheel",c.wheelDelta&&(e=c.wheelDelta/120),c.detail&&(e=-c.detail/3),h=e,c.axis!==undefined&&c.axis===c.HORIZONTAL_AXIS&&(h=0,g=-1*e),c.wheelDeltaY!==undefined&&(h=c.wheelDeltaY/120),c.wheelDeltaX!==undefined&&(g=-1*c.wheelDeltaX/120),d.unshift(b,e,g,h),(a.event.dispatch||a.event.handle).apply(this,d)}var b=["DOMMouseScroll","mousewheel"];if(a.event.fixHooks)for(var c=b.length;c;)a.event.fixHooks[b[--c]]=a.event.mouseHooks;a.event.special.mousewheel={setup:function(){if(this.addEventListener)for(var a=b.length;a;)this.addEventListener(b[--a],d,!1);else this.onmousewheel=d},teardown:function(){if(this.removeEventListener)for(var a=b.length;a;)this.removeEventListener(b[--a],d,!1);else this.onmousewheel=null}},a.fn.extend({mousewheel:function(a){return a?this.bind("mousewheel",a):this.trigger("mousewheel")},unmousewheel:function(a){return this.unbind("mousewheel",a)}})})(jQuery)
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/lib/paper.js
Binary file integ/renkan/lib/paper.js has changed
diff -r 4aec3f00ea87 -r 1fa074d64662 integ/renkan/lib/underscore-min.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/integ/renkan/lib/underscore-min.js	Wed Apr 03 18:56:34 2013 +0200
@@ -0,0 +1,32 @@
+// Underscore.js 1.3.3
+// (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore is freely distributable under the MIT license.
+// Portions of Underscore are inspired or borrowed from Prototype,
+// Oliver Steele's Functional, and John Resig's Micro-Templating.
+// For all details and documentation:
+// http://documentcloud.github.com/underscore
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