diff -r 1796e0220bef -r 408da84d4dc0 client/js/paper-renderer.js
--- a/client/js/paper-renderer.js	Fri Apr 19 13:39:39 2013 +0200
+++ b/client/js/paper-renderer.js	Fri Apr 19 15:31:56 2013 +0200
@@ -16,24 +16,24 @@
     _DOUBLETAP_DELAY: 800,
     _DOUBLETAP_DISTANCE: 20*20,
     _USER_PLACEHOLDER : function(_renkan) {
-    	return {
-    		color: _renkan.options.default_user_color,
-	        title: _renkan.translate("(unknown user)"),
-	        get: function(attr) {
-	            return this[attr] || false;
-	        }
-    	}
+        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);})();"
+        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);})();"
     },
     shortenText : function(_text, _maxlength) {
-		return (_text.length > _maxlength ? (_text.substr(0,_maxlength) + '…') : _text);
-	},
+        return (_text.length > _maxlength ? (_text.substr(0,_maxlength) + '…') : _text);
+    },
     drawEditBox : function(_options, _coords, _path, _xmargin, _selector) {
-    	_selector.css({
+        _selector.css({
             width: ( _options.tooltip_width - 2* _options.tooltip_padding ),
         })
         var _height = _selector.outerHeight() + 2* _options.tooltip_padding,
@@ -93,8 +93,8 @@
             this._removeBinding = function() {
                 _renderer.removeRepresentation(_this);
                 _(function() {
-                	_renderer.redraw()
-            	}).defer();
+                    _renderer.redraw()
+                }).defer();
             }
             this.model.on("change", this._changeBinding );
             this.model.on("remove", this._removeBinding );
@@ -175,77 +175,77 @@
     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;
+        this.circle.strokeWidth = this.options.node_stroke_width;
+        this.h_ratio = 1;
     } else {
-    	this.circle.opacity = .01;
-    	this.h_ratio = 0;
+        this.circle.opacity = .01;
+        this.h_ratio = 0;
     }
     this.title = Rkns.$('<div class="Rk-Label">').appendTo(this.renderer.labels_$);
     if (this.options.editor_mode) {
-    	this.buttons = [
-    		new Rkns.Renderer.NodeEditButton(this.renderer, null),
-    		new Rkns.Renderer.NodeRemoveButton(this.renderer, null),
-    		new Rkns.Renderer.NodeLinkButton(this.renderer, null),
-    		new Rkns.Renderer.NodeEnlargeButton(this.renderer, null),
-    		new Rkns.Renderer.NodeShrinkButton(this.renderer, null)
-    	];
-    	for (var i = 0; i < this.buttons.length; i++) {
-    		this.buttons[i].source_representation = this;
-    	}
+        this.buttons = [
+            new Rkns.Renderer.NodeEditButton(this.renderer, null),
+            new Rkns.Renderer.NodeRemoveButton(this.renderer, null),
+            new Rkns.Renderer.NodeLinkButton(this.renderer, null),
+            new Rkns.Renderer.NodeEnlargeButton(this.renderer, null),
+            new Rkns.Renderer.NodeShrinkButton(this.renderer, null)
+        ];
+        for (var i = 0; i < this.buttons.length; i++) {
+            this.buttons[i].source_representation = this;
+        }
     } else {
-    	this.buttons = [];
+        this.buttons = [];
     }
     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.minimap_circle.__representation = this.renderer.minimap.miniframe.__representation;
-	    this.renderer.minimap.node_group.addChild(this.minimap_circle);
+        this.renderer.minimap.node_layer.activate();
+        this.minimap_circle = new paper.Path.Circle([0, 0], 1);
+        this.minimap_circle.__representation = this.renderer.minimap.miniframe.__representation;
+        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 = this.options.node_size_base * Math.exp((this.model.get("size") || 0) * Rkns.Renderer._NODE_SIZE_STEP);
+        _baseRadius = this.options.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) {
-    	this.buttons.forEach(function(b) {
-    		b.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);
-	    }
+        this.buttons.forEach(function(b) {
+            b.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.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(this.options.label_untitled_nodes) || "";
-	_text = Rkns.Renderer.shortenText(_text, this.options.node_label_max_length);
-	this.title.text(_text);
-	this.title.css({
-		left: this.paper_coords.x,
-		top: this.paper_coords.y + this.circle_radius * this.h_ratio + this.options.node_label_distance
-	})
+    _text = Rkns.Renderer.shortenText(_text, this.options.node_label_max_length);
+    this.title.text(_text);
+    this.title.css({
+        left: this.paper_coords.x,
+        top: this.paper_coords.y + this.circle_radius * this.h_ratio + 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;
     var _pc = this.paper_coords;
-	this.buttons.forEach(function(b) {
-		b.moveTo(_pc);
-	});
+    this.buttons.forEach(function(b) {
+        b.moveTo(_pc);
+    });
     var _img = this.model.get("image");
     if (_img && _img !== this.img) {
         var _image = new Image(),
@@ -257,29 +257,29 @@
             _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);
+                _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;
+                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 = _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);
+            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();
-    		paper.view.draw();
+            paper.view.draw();
         }
         _image.src = _img;
     }
@@ -290,34 +290,34 @@
     }
     
     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));
+        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._.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);
-	}
+    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() {
@@ -328,46 +328,46 @@
 }
 
 Rkns.Renderer.Node.prototype.select = function() {
-	this.selected = true;
+    this.selected = true;
     this.circle.strokeWidth = this.options.selected_node_stroke_width;
     if (this.renderer.isEditable()) {
-    	this.buttons.forEach(function(b) {
-    		b.show();
-    	});
+        this.buttons.forEach(function(b) {
+            b.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");
-	        }
-	    });
+        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;
+        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) {
-	this.selected = false;
+    this.selected = false;
     if (!_newTarget || _newTarget.source_representation !== this) {
-    	this.buttons.forEach(function(b) {
-    		b.hide();
-    	});
-    	this.circle.strokeWidth = this.options.node_stroke_width;
+        this.buttons.forEach(function(b) {
+            b.hide();
+        });
+        this.circle.strokeWidth = this.options.node_stroke_width;
         Rkns.$('.Rk-Bin-Item').removeClass("selected");
-    	if (this.renderer.minimap) {
-    		this.minimap_circle.strokeColor = undefined;
-    	}
+        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) {
@@ -391,24 +391,24 @@
             }
         };
     if (this.renderer.isEditable()) {
-    	this.model.set(_data);
+        this.model.set(_data);
     }
 }
 
 Rkns.Renderer.Node.prototype.mousedown = function(_event, _isTouch) {
-	if (_isTouch) {
-		this.renderer.unselectAll();
-		this.select();
-	}
+    if (_isTouch) {
+        this.renderer.unselectAll();
+        this.select();
+    }
 }
 
 Rkns.Renderer.Node.prototype.mouseup = function(_event, _isTouch) {
     if (this.renderer.isEditable() && this.renderer.is_dragging) {
         this.saveCoords();
     } else {
-    	if (!_isTouch) {
-    		this.openEditor();
-    	}
+        if (!_isTouch) {
+            this.openEditor();
+        }
     }
     this.renderer.click_target = null;
     this.renderer.is_dragging = false;
@@ -417,13 +417,13 @@
 
 Rkns.Renderer.Node.prototype.destroy = function(_event) {
     this.super("destroy");
-	this.buttons.forEach(function(b) {
-		b.destroy();
-	});
+    this.buttons.forEach(function(b) {
+        b.destroy();
+    });
     this.circle.remove();
     this.title.remove();
     if (this.renderer.minimap) {
-    	this.minimap_circle.remove();
+        this.minimap_circle.remove();
     }
     if (this.node_image) {
         this.node_image.remove();
@@ -446,10 +446,10 @@
     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 ]
-	);
+        [ 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 = Rkns.$('<div class="Rk-Label Rk-Edge-Label">').appendTo(this.renderer.labels_$);
     this.arrow_angle = 0;
@@ -461,11 +461,11 @@
     }
     
     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.__representation = this.renderer.minimap.miniframe.__representation;
-	    this.minimap_line.strokeWidth = 1;
+        this.renderer.minimap.edge_layer.activate();
+        this.minimap_line = new paper.Path();
+        this.minimap_line.add([0,0],[0,0]);
+        this.minimap_line.__representation = this.renderer.minimap.miniframe.__representation;
+        this.minimap_line.strokeWidth = 1;
     }
 }
 
@@ -473,7 +473,7 @@
     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;
+        return;
     }
     var _p0a = this.from_representation.paper_coords,
         _p1a = this.to_representation.paper_coords,
@@ -509,26 +509,26 @@
         _textdelta = _textdelta.multiply(-1);
     }
     var _text = this.model.get("title") || this.renkan.translate(this.options.label_untitled_edges) || "";
-	_text = Rkns.Renderer.shortenText(_text, this.options.node_label_max_length);
+    _text = Rkns.Renderer.shortenText(_text, this.options.node_label_max_length);
     this.text.text(_text);
     var _textpos = this.paper_coords.add(_textdelta);
     this.text.css({
-    	left: _textpos.x,
-    	top: _textpos.y,
-    	transform: "rotate(" + _a + "deg)",
-    	"-moz-transform": "rotate(" + _a + "deg)",
-    	"-webkit-transform": "rotate(" + _a + "deg)"
+        left: _textpos.x,
+        top: _textpos.y,
+        transform: "rotate(" + _a + "deg)",
+        "-moz-transform": "rotate(" + _a + "deg)",
+        "-webkit-transform": "rotate(" + _a + "deg)"
     });
     this.text_angle = _a;
     if (this.options.editor_mode) {
-	    this.edit_button.moveTo(this.paper_coords);
-	    this.remove_button.moveTo(this.paper_coords);
+        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")));
+        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")));
     }
 }
 
@@ -540,33 +540,33 @@
 }
 
 Rkns.Renderer.Edge.prototype.select = function() {
-	this.selected = true;
+    this.selected = true;
     this.line.strokeWidth = this.options.selected_edge_stroke_width;
     if (this.renderer.isEditable()) {
-	    this.edit_button.show();
-	    this.remove_button.show();
-   	}
+        this.edit_button.show();
+        this.remove_button.show();
+       }
     if (!this.options.editor_mode) {
         this.openEditor();
     }
 }
 
 Rkns.Renderer.Edge.prototype.unselect = function(_newTarget) {
-	this.selected = false;
+    this.selected = false;
     if (!_newTarget || _newTarget.source_representation !== this) {
-    	if (this.options.editor_mode) {
-	        this.edit_button.hide();
-	        this.remove_button.hide();
+        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.mousedown = function(_event, _isTouch) {
-	if (_isTouch) {
-		this.renderer.unselectAll();
-		this.select();
-	}
+    if (_isTouch) {
+        this.renderer.unselectAll();
+        this.select();
+    }
 }
 
 Rkns.Renderer.Edge.prototype.mouseup = function(_event, _isTouch) {
@@ -576,23 +576,23 @@
         this.from_representation.is_dragging = false;
         this.to_representation.is_dragging = false;
     } else {
-    	if (!_isTouch) {
-    		this.openEditor();
-    	}
-	}
+        if (!_isTouch) {
+            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);
-	}
+    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() {
@@ -601,12 +601,12 @@
     this.arrow.remove();
     this.text.remove();
     if (this.renderer.minimap) {
-   	    this.minimap_line.remove();
+        this.minimap_line.remove();
     }
     if (this.options.editor_mode) {
-	    this.edit_button.destroy();
-	    this.remove_button.destroy();
-   	}
+        this.edit_button.destroy();
+        this.remove_button.destroy();
+    }
     var _this = this;
     this.bundle.edges = Rkns._(this.bundle.edges).reject(function(_edge) {
         return _edge === _this;
@@ -631,10 +631,10 @@
     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 ]
-	);
+        [ 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;
 }
@@ -652,11 +652,11 @@
 }
 
 Rkns.Renderer.TempEdge.prototype.paperShift = function(_delta) {
-	if (!this.renderer.isEditable()) {
-		this.renderer.removeRepresentation(_this);
-    	paper.view.draw();
-    	return;
-	}
+    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);
@@ -670,18 +670,18 @@
     if (_hitResult && typeof _hitResult.item.__representation !== "undefined") {
         var _target = _hitResult.item.__representation;
         if (_target.type.substr(0,4) === "Node") {
-        	var _destmodel = _target.model || _target.source_representation.model;
-        	if (_model !== _destmodel) {
-	            var _data = {
-	                id: Rkns.Utils.getUID('edge'),
-	                created_by: this.renkan.current_user,
-	                from: _model,
-	                to: _destmodel
-	            };
-	            if (this.renderer.isEditable()) {
-	            	this.project.addEdge(_data);
-	            }
-	        }
+            var _destmodel = _target.model || _target.source_representation.model;
+            if (_model !== _destmodel) {
+                var _data = {
+                    id: Rkns.Utils.getUID('edge'),
+                    created_by: this.renkan.current_user,
+                    from: _model,
+                    to: _destmodel
+                };
+                if (this.renderer.isEditable()) {
+                    this.project.addEdge(_data);
+                }
+            }
         }
         
         if (_model === _target.model || (_target.source_representation && _target.source_representation.model === _model)) {
@@ -747,7 +747,7 @@
     this.editor_$
         .html(_template({
             node: {
-            	has_creator: !!_model.get("created_by"),
+                has_creator: !!_model.get("created_by"),
                 title: _model.get("title"),
                 uri: _model.get("uri"),
                 short_uri:  Rkns.Renderer.shortenText((_model.get("uri") || "").replace(/^(https?:\/\/)?(www\.)?/,'').replace(/\/$/,''),40),
@@ -763,63 +763,63 @@
         }));
     this.redraw();
     var _this = this,
-    	closeEditor = function() {
-    		_this.renderer.removeRepresentation(_this);
-        	paper.view.draw();
-    	}
-    	
+        closeEditor = function() {
+            _this.renderer.removeRepresentation(_this);
+            paper.view.draw();
+        }
+        
     this.editor_$.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_$.on("keyup", function(_e) {
-    		if (_e.keyCode === 27) {
-    			closeEditor();
-    		}
-    	});
-    	
-    	this.editor_$.find("input, textarea").on("change keyup paste", onFieldChange);
-    	
+        
+        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_$.on("keyup", function(_e) {
+            if (_e.keyCode === 27) {
+                closeEditor();
+            }
+        });
+        
+        this.editor_$.find("input, textarea").on("change keyup paste", onFieldChange);
+        
         this.editor_$.find(".Rk-Edit-Image-File").change(function() {
-        	if (this.files.length) {
-        		var f = this.files[0],
-        			fr = new FileReader();
-    			if (f.type.substr(0,5) !== "image") {
-    				alert(_this.renkan.translate("This file is not an image"));
-    				return;
-    			}
-    			if (f.size > (Rkns.Renderer._IMAGE_MAX_KB * 1024)) {
-    				alert(_this.renkan.translate("Image size must be under ")+Rkns.Renderer._IMAGE_MAX_KB+_this.renkan.translate("KB"));
-    				return;
-    			}
-        		fr.onload = function(e) {
-        			_this.editor_$.find(".Rk-Edit-Image").val(e.target.result);
-        			onFieldChange();
-        		}
-        		fr.readAsDataURL(f);
-        	}
+            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();
         
@@ -827,53 +827,53 @@
         
         this.editor_$.find(".Rk-Edit-ColorPicker-Wrapper").hover(
             function(_e) {
-            	_e.preventDefault();
-            	_picker.show();
-        	},
+                _e.preventDefault();
+                _picker.show();
+            },
             function(_e) {
-            	_e.preventDefault();
-            	_picker.hide();
-        	}
+                _e.preventDefault();
+                _picker.hide();
+            }
         );
         
         _picker.find("li").hover(
             function(_e) {
-            	_e.preventDefault();
-            	_this.editor_$.find(".Rk-Edit-Color").css("background", $(this).attr("data-color"));
-        	},
+                _e.preventDefault();
+                _this.editor_$.find(".Rk-Edit-Color").css("background", $(this).attr("data-color"));
+            },
             function(_e) {
-            	_e.preventDefault();
-            	_this.editor_$.find(".Rk-Edit-Color").css("background", _model.get("color") || (_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(_this.renkan)).get("color"))
-        	}
+                _e.preventDefault();
+                _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(_e) {
-        	_e.preventDefault();
+            _e.preventDefault();
             if (_this.renderer.isEditable()) {
-	            _model.set("color", $(this).attr("data-color"));
-            	_picker.hide();
-				paper.view.draw();
+                _model.set("color", $(this).attr("data-color"));
+                _picker.hide();
+                paper.view.draw();
             } else {
-            	closeEditor();
+                closeEditor();
             }
         });
         
         function shiftSize(n) {
-        	if (_this.renderer.isEditable()) {
-	        	var _newsize = n+(_model.get("size") || 0);
-	        	_this.editor_$.find(".Rk-Edit-Size-Value").text((_newsize > 0 ? "+" : "") + _newsize);
-	        	_model.set("size", _newsize);
-				paper.view.draw();
-			} else {
-				closeEditor();
-			}
+            if (_this.renderer.isEditable()) {
+                var _newsize = n+(_model.get("size") || 0);
+                _this.editor_$.find(".Rk-Edit-Size-Value").text((_newsize > 0 ? "+" : "") + _newsize);
+                _model.set("size", _newsize);
+                paper.view.draw();
+            } else {
+                closeEditor();
+            }
         }
         
         this.editor_$.find(".Rk-Edit-Size-Down").click(function() {
-        	shiftSize(-1);
-        	return false;
+            shiftSize(-1);
+            return false;
         });
         this.editor_$.find(".Rk-Edit-Size-Up").click(function() {
-        	shiftSize(1);
-        	return false;
+            shiftSize(1);
+            return false;
         });
     }
     this.editor_$.find("img").load(function() {
@@ -946,7 +946,7 @@
     this.editor_$
         .html(_template({
             edge: {
-            	has_creator: !!_model.get("created_by"),
+                has_creator: !!_model.get("created_by"),
                 title: _model.get("title"),
                 uri: _model.get("uri"),
                 short_uri:  Rkns.Renderer.shortenText((_model.get("uri") || "").replace(/^(https?:\/\/)?(www\.)?/,'').replace(/\/$/,''),40),
@@ -964,89 +964,89 @@
         }));
     this.redraw();
     var _this = this,
-    	closeEditor = function() {
-	        _this.renderer.removeRepresentation(_this);
-	        paper.view.draw();
-    	}
+        closeEditor = function() {
+            _this.renderer.removeRepresentation(_this);
+            paper.view.draw();
+        }
     this.editor_$.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_$.on("keyup", function(_e) {
-    		if (_e.keyCode === 27) {
-    			closeEditor();
-    		}
-    	});
-    	
+        
+        var onFieldChange = Rkns._(function() {
+            Rkns._(function() {
+                if (_this.renderer.isEditable()) {
+                    _this.editor_$.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_$.find(".Rk-Edit-URI").val()
+                    }
+                    _model.set(_data);
+                    paper.view.draw();
+                } else {
+                    closeEditor();
+                }
+            }).defer();
+        }).throttle(500);
+        
+        this.editor_$.on("keyup", function(_e) {
+            if (_e.keyCode === 27) {
+                closeEditor();
+            }
+        });
+        
         this.editor_$.find("input").on("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();
-        	}
+            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();
-	       	}
+            if (_this.renderer.isEditable()) {
+                _model.set({
+                    from: _model.get("to"),
+                    to: _model.get("from")
+                });
+                _this.draw();
+            } else {
+                closeEditor();
+            }
         });
         
         var _picker = _this.editor_$.find(".Rk-Edit-ColorPicker");
         
         this.editor_$.find(".Rk-Edit-ColorPicker-Wrapper").hover(
             function(_e) {
-            	_e.preventDefault();
-            	_picker.show();
-        	},
+                _e.preventDefault();
+                _picker.show();
+            },
             function(_e) {
-            	_e.preventDefault();
-            	_picker.hide();
-        	}
+                _e.preventDefault();
+                _picker.hide();
+            }
         );
         
         _picker.find("li").hover(
             function(_e) {
-            	_e.preventDefault();
-            	_this.editor_$.find(".Rk-Edit-Color").css("background", $(this).attr("data-color"));
-        	},
+                _e.preventDefault();
+                _this.editor_$.find(".Rk-Edit-Color").css("background", $(this).attr("data-color"));
+            },
             function(_e) {
-            	_e.preventDefault();
-            	_this.editor_$.find(".Rk-Edit-Color").css("background", _model.get("color") || (_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(_this.renkan)).get("color"))
-        	}
+                _e.preventDefault();
+                _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(_e) {
-        	_e.preventDefault();
+            _e.preventDefault();
             if (_this.renderer.isEditable()) {
-	            _model.set("color", $(this).attr("data-color"));
-            	_picker.hide();
-				paper.view.draw();
+                _model.set("color", $(this).attr("data-color"));
+                _picker.hide();
+                paper.view.draw();
             } else {
-            	closeEditor();
+                closeEditor();
             }
         });
     }
@@ -1084,22 +1084,22 @@
 Rkns.Renderer._NodeButton = Rkns.Utils.inherit(Rkns.Renderer._BaseButton);
 
 Rkns.Renderer._NodeButton.prototype.setSectorSize = function() {
-	var sectorInner = this.source_representation.circle_radius;
-	if (sectorInner !== this.lastSectorInner) {
-		if (this.sector) {
-			this.sector.destroy();
-		}
-		this.sector = this.renderer.drawSector(
-			this, 1 + sectorInner,
-			Rkns.Renderer._NODE_BUTTON_WIDTH + sectorInner,
-			this.startAngle,
-			this.endAngle,
-			1,
-			this.imageName,
-			this.renkan.translate(this.text)
-		);
-		this.lastSectorInner = sectorInner;
-	}
+    var sectorInner = this.source_representation.circle_radius;
+    if (sectorInner !== this.lastSectorInner) {
+        if (this.sector) {
+            this.sector.destroy();
+        }
+        this.sector = this.renderer.drawSector(
+            this, 1 + sectorInner,
+            Rkns.Renderer._NODE_BUTTON_WIDTH + sectorInner,
+            this.startAngle,
+            this.endAngle,
+            1,
+            this.imageName,
+            this.renkan.translate(this.text)
+        );
+        this.lastSectorInner = sectorInner;
+    }
 }
 
 /* */
@@ -1158,11 +1158,11 @@
 
 Rkns.Renderer.NodeLinkButton.prototype.mousedown = function(_event, _isTouch) {
     if (this.renderer.isEditable()) {
-	    var _off = this.renderer.canvas_$.offset(),
-	    	_point = new paper.Point([
-	            _event.pageX - _off.left,
-	            _event.pageY - _off.top
-	        ]);
+        var _off = this.renderer.canvas_$.offset(),
+            _point = new paper.Point([
+                _event.pageX - _off.left,
+                _event.pageY - _off.top
+            ]);
         this.renderer.click_target = null;
         this.renderer.removeRepresentationsOfType("editor");
         this.renderer.addTempEdge(this.source_representation, _point);
@@ -1183,11 +1183,11 @@
 }
 
 Rkns.Renderer.NodeEnlargeButton.prototype.mouseup = function() {
-	var _newsize = 1 + (this.source_representation.model.get("size") || 0);
-	this.source_representation.model.set("size", _newsize);
-	this.source_representation.select();
-	this.select();
-	paper.view.draw();
+    var _newsize = 1 + (this.source_representation.model.get("size") || 0);
+    this.source_representation.model.set("size", _newsize);
+    this.source_representation.select();
+    this.select();
+    paper.view.draw();
 }
 
 /* */
@@ -1204,11 +1204,11 @@
 }
 
 Rkns.Renderer.NodeShrinkButton.prototype.mouseup = function() {
-	var _newsize = -1 + (this.source_representation.model.get("size") || 0);
-	this.source_representation.model.set("size", _newsize);
-	this.source_representation.select();
-	this.select();
-	paper.view.draw();
+    var _newsize = -1 + (this.source_representation.model.get("size") || 0);
+    this.source_representation.model.set("size", _newsize);
+    this.source_representation.select();
+    this.select();
+    paper.view.draw();
 }
 
 /* */
@@ -1249,12 +1249,12 @@
 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.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.click_target = null;
     this.renderer.is_dragging = false;
 }
 
@@ -1282,38 +1282,38 @@
     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.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.throttledPaperDraw = Rkns._(function() {
-    	paper.view.draw();
+        paper.view.draw();
     }).throttle(100);
     
     this.bundles = [];
@@ -1330,160 +1330,160 @@
     this.imageCache = {};
     
     ['edit', 'remove', 'link', 'enlarge', 'shrink'].forEach(function(imgname) {
-    	var img = new Image();
-    	img.src = _renkan.options.static_url + 'img/' + imgname + '.png';
-    	_this.imageCache[imgname] = img;
+        var img = new Image();
+        img.src = _renkan.options.static_url + 'img/' + imgname + '.png';
+        _this.imageCache[imgname] = img;
     });
     
     var throttledMouseMove = _.throttle(function(_event, _isTouch) {
-    	_this.onMouseMove(_event, _isTouch);
+        _this.onMouseMove(_event, _isTouch);
     }, Rkns.Renderer._MOUSEMOVE_RATE);
     
     this.canvas_$.on({
-    	mousedown: function(_event) {
-    		_event.preventDefault();
-    		_this.onMouseDown(_event, false);
-    	},
-    	mousemove: function(_event) {
-    		_event.preventDefault();
-        	throttledMouseMove(_event, false);
-	    },
-	    mouseup: function(_event) {
-    		_event.preventDefault();
-	        _this.onMouseUp(_event, false);
-	    },
-	    mousewheel: function(_event, _delta) {
-    		_event.preventDefault();
-	        if (_allowScroll) {
-	        	_this.onScroll(_event, _delta);
-	        }
-	    },
-	    touchstart: function(_event) {
-	    	_event.preventDefault();
-	    	var _touches = _event.originalEvent.touches[0];
-    		if (
-    			_renkan.options.allow_double_click
-    			&& new Date() - _lastTap < Rkns.Renderer._DOUBLETAP_DELAY
-    			&& ( Math.pow(_lastTapX - _touches.pageX, 2) + Math.pow(_lastTapY - _touches.pageY, 2) < Rkns.Renderer._DOUBLETAP_DISTANCE )
-			) {
-    			_lastTap = 0;
-    			_this.onDoubleClick(_touches);
-    		} else {
-    			_lastTap = new Date();
-    			_lastTapX = _touches.pageX;
-    			_lastTapY = _touches.pageY;
-		    	_originalScale = _this.scale;
-		    	_zooming = false;
-		    	_this.onMouseDown(_touches, true);
-    		}
-	    },
-	    touchmove: function(_event) {
-	    	_event.preventDefault();
-    		_lastTap = 0;
-	    	if (_event.originalEvent.touches.length == 1) {
-	    		_this.onMouseMove(_event.originalEvent.touches[0], true);
-	    	} else {
-	    		if (!_zooming) {
-	    			_this.onMouseUp(_event.originalEvent.touches[0], true);
-			        _this.click_target = null;
-			        _this.is_dragging = false;
-			        _zooming = true;
-	    		}
-	    		if (_event.originalEvent.scale === "undefined") {
-	    			return;
-	    		}
-	    		var _newScale = _event.originalEvent.scale * _originalScale,
-	    			_scaleRatio = _newScale / _this.scale,
-	    			_newOffset = new paper.Point([
-			            _this.canvas_$.width(),
-			            _this.canvas_$.height()
-			        ]).multiply( .5 * ( 1 - _scaleRatio ) ).add(_this.offset.multiply( _scaleRatio ));
-	    		_this.setScale(_newScale, _this.offset);
-	    	}
-	    },
-	    touchend: function(_event) {
-	    	_event.preventDefault();
-	    	_this.onMouseUp(_event.originalEvent.changedTouches[0], true);
-	    },
-	    dblclick: function(_event) {
-    		_event.preventDefault();
-    		if (_renkan.options.allow_double_click) {
-    			_this.onDoubleClick(_event);
-    		}
-	    },
-	    mouseleave: function(_event) {
-    		_event.preventDefault();
-	        _this.onMouseUp(_event, false);
-	        _this.click_target = null;
-	        _this.is_dragging = false;
-	    },
-	    dragover: function(_event) {
-	    	_event.preventDefault();
-	    },
-	    dragenter: function(_event) {
-	    	_event.preventDefault();
-	    	_allowScroll = false;
-	    },
-	    dragleave: function(_event) {
-	    	_event.preventDefault();
-	    	_allowScroll = true;
-	    },
-	    drop: function(_event) {
-	    	_event.preventDefault();
-	    	_allowScroll = true;
-	    	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;
-			}
-			_this.dropData(res, _event.originalEvent);
-	    }
+        mousedown: function(_event) {
+            _event.preventDefault();
+            _this.onMouseDown(_event, false);
+        },
+        mousemove: function(_event) {
+            _event.preventDefault();
+            throttledMouseMove(_event, false);
+        },
+        mouseup: function(_event) {
+            _event.preventDefault();
+            _this.onMouseUp(_event, false);
+        },
+        mousewheel: function(_event, _delta) {
+            _event.preventDefault();
+            if (_allowScroll) {
+                _this.onScroll(_event, _delta);
+            }
+        },
+        touchstart: function(_event) {
+            _event.preventDefault();
+            var _touches = _event.originalEvent.touches[0];
+            if (
+                _renkan.options.allow_double_click
+                && new Date() - _lastTap < Rkns.Renderer._DOUBLETAP_DELAY
+                && ( Math.pow(_lastTapX - _touches.pageX, 2) + Math.pow(_lastTapY - _touches.pageY, 2) < Rkns.Renderer._DOUBLETAP_DISTANCE )
+            ) {
+                _lastTap = 0;
+                _this.onDoubleClick(_touches);
+            } else {
+                _lastTap = new Date();
+                _lastTapX = _touches.pageX;
+                _lastTapY = _touches.pageY;
+                _originalScale = _this.scale;
+                _zooming = false;
+                _this.onMouseDown(_touches, true);
+            }
+        },
+        touchmove: function(_event) {
+            _event.preventDefault();
+            _lastTap = 0;
+            if (_event.originalEvent.touches.length == 1) {
+                _this.onMouseMove(_event.originalEvent.touches[0], true);
+            } else {
+                if (!_zooming) {
+                    _this.onMouseUp(_event.originalEvent.touches[0], true);
+                    _this.click_target = null;
+                    _this.is_dragging = false;
+                    _zooming = true;
+                }
+                if (_event.originalEvent.scale === "undefined") {
+                    return;
+                }
+                var _newScale = _event.originalEvent.scale * _originalScale,
+                    _scaleRatio = _newScale / _this.scale,
+                    _newOffset = new paper.Point([
+                        _this.canvas_$.width(),
+                        _this.canvas_$.height()
+                    ]).multiply( .5 * ( 1 - _scaleRatio ) ).add(_this.offset.multiply( _scaleRatio ));
+                _this.setScale(_newScale, _this.offset);
+            }
+        },
+        touchend: function(_event) {
+            _event.preventDefault();
+            _this.onMouseUp(_event.originalEvent.changedTouches[0], true);
+        },
+        dblclick: function(_event) {
+            _event.preventDefault();
+            if (_renkan.options.allow_double_click) {
+                _this.onDoubleClick(_event);
+            }
+        },
+        mouseleave: function(_event) {
+            _event.preventDefault();
+            _this.onMouseUp(_event, false);
+            _this.click_target = null;
+            _this.is_dragging = false;
+        },
+        dragover: function(_event) {
+            _event.preventDefault();
+        },
+        dragenter: function(_event) {
+            _event.preventDefault();
+            _allowScroll = false;
+        },
+        dragleave: function(_event) {
+            _event.preventDefault();
+            _allowScroll = true;
+        },
+        drop: function(_event) {
+            _event.preventDefault();
+            _allowScroll = true;
+            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;
+            }
+            _this.dropData(res, _event.originalEvent);
+        }
     });
     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 ));
+        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_$.height()
-	        ]).multiply( .5 * ( 1 - Math.SQRT2 ) ).add(_this.offset.multiply( Math.SQRT2 ));
+        var _newScale = _this.scale * Math.SQRT2,
+            _offset = new paper.Point([
+                _this.canvas_$.width(),
+                _this.canvas_$.height()
+            ]).multiply( .5 * ( 1 - Math.SQRT2 ) ).add(_this.offset.multiply( Math.SQRT2 ));
         _this.setScale( _newScale, _offset );
     });
     this.$.find(".Rk-CurrentUser").mouseenter(
@@ -1532,45 +1532,45 @@
         }
     });
     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;
-	    });
+        .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()]);
-    		});
-    		$(this).html("&raquo;");
-    	}
+        var bins = _renkan.$.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.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();
     }
@@ -1616,31 +1616,31 @@
     });
     
     if (_renkan.options.size_bug_fix) {
-	    window.setTimeout(
-	    	function() {
-	    		var w = _this.$.width(),
-	    			h = _this.$.height();
-				if (_renkan.options.show_top_bar) {
-					h -= _this.$.find(".Rk-TopBar").height();
-				}
-				_this.canvas_$.attr({
-					width: w,
-					height: h
-				});
-				
-	    		paper.view.viewSize = new paper.Size([w, h]);
-	    		_this.autoScale();
-	    	},
-	    	500
-	    );
+        window.setTimeout(
+            function() {
+                var w = _this.$.width(),
+                    h = _this.$.height();
+                if (_renkan.options.show_top_bar) {
+                    h -= _this.$.find(".Rk-TopBar").height();
+                }
+                _this.canvas_$.attr({
+                    width: w,
+                    height: h
+                });
+                
+                paper.view.viewSize = new paper.Size([w, h]);
+                _this.autoScale();
+            },
+            500
+        );
     }
     
     this.redraw();
     
     if (this.minimap) {
-	    window.setInterval(function() {
-	    	_this.rescaleMinimap()
-	    }, 2000);
+        window.setInterval(function() {
+            _this.rescaleMinimap()
+        }, 2000);
     }
 
 }
@@ -1667,7 +1667,7 @@
 
 Rkns.Renderer.Scene.prototype.drawSector = function(_repr, _inR, _outR, _startAngle, _endAngle, _padding, _imgname, _caption) {
     var _options = this.renkan.options,
-    	_startRads = _startAngle * Math.PI / 180,
+        _startRads = _startAngle * Math.PI / 180,
         _endRads = _endAngle * Math.PI / 180,
         _img = this.imageCache[_imgname],
         _span = _endRads - _startRads,
@@ -1694,7 +1694,7 @@
         _textX = Math.cos(_centerRads) * (_outR + 3),
         _textY = Math.sin(_centerRads) * (_outR + _options.buttons_label_font_size) + _options.buttons_label_font_size / 2,
         _segments = [];
-	this.buttons_layer.activate();
+    this.buttons_layer.activate();
     var _path = new paper.Path();
     _path.add([_startXIn, _startYIn]);
     _path.arcTo([_centerXIn, _centerYIn], [_endXIn, _endYIn]);
@@ -1756,14 +1756,14 @@
         }
     }
     function showImage() {
-    	var _raster = new paper.Raster(_img);
-	    _raster.position = _imgdelta.add(_grp.position).subtract(_delta);
-	   	_grp.addChild(_raster);
+        var _raster = new paper.Raster(_img);
+        _raster.position = _imgdelta.add(_grp.position).subtract(_delta);
+        _grp.addChild(_raster);
     }
     if (_img.width) {
-    	showImage();
+        showImage();
     } else {
-    	Rkns.$(_img).on("load",showImage);
+        Rkns.$(_img).on("load",showImage);
     }
     
     return _res
@@ -1794,33 +1794,33 @@
 }
 
 Rkns.Renderer.Scene.prototype.isEditable = function() {
-	return (this.renkan.options.editor_mode && !this.renkan.read_only)
+    return (this.renkan.options.editor_mode && !this.renkan.read_only)
 }
 
 Rkns.Renderer.Scene.prototype.onStatusChange = function() {
-	var savebtn = this.$.find(".Rk-Save-Button"),
-		tip = savebtn.find(".Rk-TopBar-Tooltip-Contents");
-	if (this.renkan.read_only) {
-		savebtn.removeClass("disabled Rk-Save-Online").addClass("Rk-Save-ReadOnly");
-		tip.text(this.renkan.translate("Connection lost"));
-	} else {
-		if (this.renkan.options.snapshot_mode) {
-			savebtn.removeClass("Rk-Save-ReadOnly Rk-Save-Online");
-			tip.text(this.renkan.translate("Archive Project"));
-		} else {
-			savebtn.removeClass("disabled Rk-Save-ReadOnly").addClass("Rk-Save-Online");
-			tip.text(this.renkan.translate("Auto-save enabled"));
-		}
-	}
+    var savebtn = this.$.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();
+    if (_newScale > Rkns.Renderer._MIN_SCALE && _newScale < Rkns.Renderer._MAX_SCALE) {
+        this.scale = _newScale;
+        if (_offset) {
+            this.offset = _offset
+        }
+        this.redraw();
     }
 }
 
@@ -1834,7 +1834,7 @@
             _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)));
+        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])));
@@ -1842,9 +1842,9 @@
 }
 
 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);
+    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() {
@@ -1857,16 +1857,16 @@
             _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.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.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();
@@ -1963,10 +1963,10 @@
 
 Rkns.Renderer.Scene.prototype.redraw = function() {
     Rkns._(this.representations).each(function(_representation) {
-    	_representation.redraw(true);
+        _representation.redraw(true);
     });
     if (this.minimap) {
-    	this.redrawMiniframe();
+        this.redrawMiniframe();
     }
     paper.view.draw();
 }
@@ -1998,20 +1998,20 @@
 }
 
 Rkns.Renderer.Scene.prototype.paperShift = function(_delta) {
-	this.offset = this.offset.add(_delta);
+    this.offset = this.offset.add(_delta);
     this.redraw();
 }
 
 Rkns.Renderer.Scene.prototype.onMouseMove = function(_event) {
     var _off = this.canvas_$.offset(),
-    	_point = new paper.Point([
+        _point = new paper.Point([
             _event.pageX - _off.left,
             _event.pageY - _off.top
         ]),
         _delta = _point.subtract(this.last_point);
-	this.last_point = _point;
+    this.last_point = _point;
     if (!this.is_dragging && this.mouse_down && _delta.length > Rkns.Renderer._MIN_DRAG_DISTANCE) {
-    	this.is_dragging = true;
+        this.is_dragging = true;
     }
     var _hitResult = paper.project.hitTest(_point);
     if (this.is_dragging) {
@@ -2028,7 +2028,7 @@
 
 Rkns.Renderer.Scene.prototype.onMouseDown = function(_event, _isTouch) {
     var _off = this.canvas_$.offset(),
-    	_point = new paper.Point([
+        _point = new paper.Point([
             _event.pageX - _off.left,
             _event.pageY - _off.top
         ]);
@@ -2075,7 +2075,7 @@
 }
 
 Rkns.Renderer.Scene.prototype.onMouseUp = function(_event, _isTouch) {
-	this.mouse_down = false;
+    this.mouse_down = false;
     if (this.click_target) {
         var _off = this.canvas_$.offset();
         this.click_target.mouseup(
@@ -2091,7 +2091,7 @@
         this.click_target = null;
         this.is_dragging = false;
         if (_isTouch) {
-        	this.unselectAll();
+            this.unselectAll();
         }
     }
     paper.view.draw();
@@ -2106,9 +2106,9 @@
                 _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) );
+            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.setScale( this.scale * Math.SQRT1_2, this.offset.add(_delta.divide(Math.SQRT2)));
         }
         this.totalScroll = 0;
     }
@@ -2141,86 +2141,86 @@
 }
 
 Rkns.Renderer.Scene.prototype.dropData = function(_data, _event) {
-	if (!this.isEditable()) {
-		return;
-	}
-	if (_data["text/json"] || _data["application/json"]) {
-		try {
-			var jsondata = JSON.parse(_data["text/json"] || _data["application/json"]);
-			_(_data).extend(jsondata);
-		}
-		catch(e) {}
-	}
-	var newNode = {};
-	switch(_data["text/x-iri-specific-site"]) {
-		case "twitter":
-			var snippet = Rkns.$('<div>').html(_data["text/x-iri-selected-html"]),
-				tweetdiv = snippet.find(".tweet")
-			newNode.title = _renkan.translate("Tweet by ") + tweetdiv.attr("data-name");
-			newNode.uri = "http://twitter.com/" + tweetdiv.attr("data-screen-name") + "/status/" + tweetdiv.attr("data-tweet-id");
-			newNode.image = tweetdiv.find(".avatar").attr("src");
-			newNode.description = tweetdiv.find(".js-tweet-text:first").text();
-		break;
-		case "google":
-			var snippet = Rkns.$('<div>').html(_data["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 (_data["text/x-iri-source-uri"]) {
-	    		newNode.uri = _data["text/x-iri-source-uri"];
-	    	}
-	    	if (_data["text/plain"] || _data["text/x-iri-selected-text"]) {
-	    		newNode.description = (_data["text/plain"] || _data["text/x-iri-selected-text"]).replace(/[\s\n]+/gm,' ').trim();
-	    	}
-	    	if (_data["text/html"] || _data["text/x-iri-selected-html"]) {
-	    		var snippet = Rkns.$('<div>').html(_data["text/html"] || _data["text/x-iri-selected-html"]);
-	    		var _imgs = snippet.find("img");
-	    		if (_imgs.length) {
-	    			newNode.image = _imgs[0].src;
-	    		}
-	    		var _as = snippet.find("a");
-	    		if (_as.length) {
-	    			newNode.uri = _as[0].href;
-	    		}
-	    		newNode.title = snippet.find("[title]").attr("title") || newNode.title;
-	    		newNode.description = snippet.text().replace(/[\s\n]+/gm,' ').trim();
-	    	}
-	    	if (_data["text/uri-list"]) {
-	    		newNode.uri = _data["text/uri-list"];
-	    	}
-	    	if (_data["text/x-moz-url"] && !newNode.title) {
-	    		newNode.title = (_data["text/x-moz-url"].split("\n")[1] || "").trim();
-	    		if (newNode.title === newNode.uri) {
-	    			newNode.title = false;
-	    		}
-	    	}
-	    	if (_data["text/x-iri-source-title"] && !newNode.title) {
-	    		newNode.title = _data["text/x-iri-source-title"];
-	    	}
-	    	if (_data["text/html"] || _data["text/x-iri-selected-html"]) {
-	    		newNode.image = snippet.find("[data-image]").attr("data-image") || newNode.image;
-	    		newNode.uri = snippet.find("[data-uri]").attr("data-uri") || newNode.uri;
-	    		newNode.title = snippet.find("[data-title]").attr("data-title") || newNode.title;
-	    		newNode.description = snippet.find("[data-description]").attr("data-description") || newNode.description;
-	    	}
-	}
-	if (!newNode.title) {
-		newNode.title = this.renkan.translate("Dragged resource");
-	}
-	var fields = ["title", "description", "uri", "image"];
-	for (var i = 0; i < fields.length; i++) {
-		var f = fields[i];
-		if (_data["text/x-iri-" + f] || _data[f]) {
-			newNode[f] = _data["text/x-iri-" + f] || _data[f];
-		}
-		if (newNode[f] === "none" || newNode[f] === "null") {
-			newNode[f] = undefined;
-		}
-	}
-	var _off = this.canvas_$.offset(),
+    if (!this.isEditable()) {
+        return;
+    }
+    if (_data["text/json"] || _data["application/json"]) {
+        try {
+            var jsondata = JSON.parse(_data["text/json"] || _data["application/json"]);
+            _(_data).extend(jsondata);
+        }
+        catch(e) {}
+    }
+    var newNode = {};
+    switch(_data["text/x-iri-specific-site"]) {
+        case "twitter":
+            var snippet = Rkns.$('<div>').html(_data["text/x-iri-selected-html"]),
+                tweetdiv = snippet.find(".tweet")
+            newNode.title = _renkan.translate("Tweet by ") + tweetdiv.attr("data-name");
+            newNode.uri = "http://twitter.com/" + tweetdiv.attr("data-screen-name") + "/status/" + tweetdiv.attr("data-tweet-id");
+            newNode.image = tweetdiv.find(".avatar").attr("src");
+            newNode.description = tweetdiv.find(".js-tweet-text:first").text();
+        break;
+        case "google":
+            var snippet = Rkns.$('<div>').html(_data["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 (_data["text/x-iri-source-uri"]) {
+                newNode.uri = _data["text/x-iri-source-uri"];
+            }
+            if (_data["text/plain"] || _data["text/x-iri-selected-text"]) {
+                newNode.description = (_data["text/plain"] || _data["text/x-iri-selected-text"]).replace(/[\s\n]+/gm,' ').trim();
+            }
+            if (_data["text/html"] || _data["text/x-iri-selected-html"]) {
+                var snippet = Rkns.$('<div>').html(_data["text/html"] || _data["text/x-iri-selected-html"]);
+                var _imgs = snippet.find("img");
+                if (_imgs.length) {
+                    newNode.image = _imgs[0].src;
+                }
+                var _as = snippet.find("a");
+                if (_as.length) {
+                    newNode.uri = _as[0].href;
+                }
+                newNode.title = snippet.find("[title]").attr("title") || newNode.title;
+                newNode.description = snippet.text().replace(/[\s\n]+/gm,' ').trim();
+            }
+            if (_data["text/uri-list"]) {
+                newNode.uri = _data["text/uri-list"];
+            }
+            if (_data["text/x-moz-url"] && !newNode.title) {
+                newNode.title = (_data["text/x-moz-url"].split("\n")[1] || "").trim();
+                if (newNode.title === newNode.uri) {
+                    newNode.title = false;
+                }
+            }
+            if (_data["text/x-iri-source-title"] && !newNode.title) {
+                newNode.title = _data["text/x-iri-source-title"];
+            }
+            if (_data["text/html"] || _data["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;
+            }
+    }
+    if (!newNode.title) {
+        newNode.title = this.renkan.translate("Dragged resource");
+    }
+    var fields = ["title", "description", "uri", "image"];
+    for (var i = 0; i < fields.length; i++) {
+        var f = fields[i];
+        if (_data["text/x-iri-" + f] || _data[f]) {
+            newNode[f] = _data["text/x-iri-" + f] || _data[f];
+        }
+        if (newNode[f] === "none" || newNode[f] === "null") {
+            newNode[f] = undefined;
+        }
+    }
+    var _off = this.canvas_$.offset(),
         _point = new paper.Point([
             _event.pageX - _off.left,
             _event.pageY - _off.top
@@ -2239,9 +2239,9 @@
                 y: _coords.y
             }
         };
-	var _node = this.renkan.project.addNode(_nodedata),
-		_repr = this.getRepresentationByModel(_node);
-	if (_event.type === "drop") {
-    	_repr.openEditor();
+    var _node = this.renkan.project.addNode(_nodedata),
+        _repr = this.getRepresentationByModel(_node);
+    if (_event.type === "drop") {
+        _repr.openEditor();
     }
 }