diff -r 3ab36f402b0c -r 198c2b79f5e1 src/widgets/Slideshare.js
--- a/src/widgets/Slideshare.js	Thu Jan 02 16:40:25 2014 +0100
+++ b/src/widgets/Slideshare.js	Thu Jan 02 16:49:20 2014 +0100
@@ -2,116 +2,129 @@
 
 IriSP.Widgets.Slideshare = function(player, config) {
     IriSP.Widgets.Widget.call(this, player, config);
-};
+    this.lastSlide = {
+        presentation: "",
+        slide: 0
+    }
+    this.embedObject = null;
+    this.oembedCache = {}
+}
 
 IriSP.Widgets.Slideshare.prototype = new IriSP.Widgets.Widget();
 
 IriSP.Widgets.Slideshare.prototype.defaults = {
     annotation_type: "slide",
     sync: true,
-};
+    embed_width: 400,
+    embed_height: 300
+}
 
 IriSP.Widgets.Slideshare.prototype.messages = {
     fr: {
-        slides_ : "Diapositives"
+        slides_ : "Diapositives :"
     },
     en: {
-        slides_ : "Slides"
+        slides_ : "Slides:"
     }
-};
+}
 
 IriSP.Widgets.Slideshare.prototype.template =
     '<div class="Ldt-SlideShare"><h2>{{l10n.slides_}}</h2><hr /><div class="Ldt-SlideShare-Container"></div></div>';
 
 IriSP.Widgets.Slideshare.prototype.draw = function() {
-    
-    function insertSlideshare(_presentation, _slide) {
-        if (_lastEmbedded === _presentation) {
-            if (_embedObject && typeof _embedObject.jumpTo === "function") {
-                _embedObject.jumpTo(parseInt(_slide));
-            }
-        } else {
-            _lastEmbedded = _presentation;
-            var _id = IriSP.Model.getUID(),
-                _params = {
-                    allowScriptAccess: "always"
-                },
-                _atts = {
-                    id: _id
-                },
-                _flashvars = {
-                    doc : _presentation,
-                    startSlide : _slide
-                };
-            $container.html('<div id="' + _id + '"></div>');
-            swfobject.embedSWF(
-                "http://static.slidesharecdn.com/swf/ssplayer2.swf",
-                _id,
-                _this.embed_width,
-                _this.embed_height,
-                "8",
-                null,
-                _flashvars,
-                _params,
-                _atts
-            );
-            _embedObject = document.getElementById(_id);
-        }
-        $container.show();
+    var _hide = false;
+    if (typeof this.annotation_type !== "undefined" && this.annotation_type) {
+        var _annType = this.source.getAnnotationTypes().searchByTitle(this.annotation_type);
+        _hide = !_annType.length;
     }
-    
-    var _annotations = this.getWidgetAnnotations();
-    if (!_annotations.length) {
+    if (_hide) {
         this.$.hide();
     } else {
         this.renderTemplate();
-        var _lastPres = "",
-            _embedObject = null,
-            _oembedCache = {},
-            _lastEmbedded = "",
-            _this = this,
-            $container = this.$.find(".Ldt-SlideShare-Container");
-            
-        this.embed_width = this.embed_width || $container.innerWidth();
-        this.embed_height = this.embed_height || Math.floor(this.embed_width * 3/4);
-        
-        _annotations.forEach(function(_a) {
-            _a.on("leave", function() {
-                $container.hide();
-                _lastPres = "";
-            });
-            _a.on("enter", function() {
-                var _description = _a.description,
-                    _isurl = /^https?:\/\//.test(_description),
-                    _presentation = _description.replace(/#.*$/,''),
-                    _slidematch = _description.match(/(#|\?|&)id=(\d+)/),
-                    _slide = parseInt(_slidematch && _slidematch.length > 2 ? _slidematch[2] : 1);
-                if (_presentation !== _lastPres) {
-                    if (_isurl) {
-                        if (typeof _oembedCache[_presentation] === "undefined") {
-                            var _ajaxUrl = "http://www.slideshare.net/api/oembed/1?url="
-                                + encodeURIComponent(_presentation)
-                                + "&format=jsonp&callback=?";
-                            IriSP.jQuery.getJSON(_ajaxUrl, function(_oembedData) {
-                                var _presmatch = _oembedData.html.match(/doc=([a-z0-9\-_%]+)/i);
-                                if (_presmatch && _presmatch.length > 1) {
-                                    _oembedCache[_presentation] =  _presmatch[1];
-                                    insertSlideshare(_presmatch[1], _slide);
-                                }
-                            });
-                        } else {
-                            insertSlideshare(_oembedCache[_presentation], _slide);
+        this.$container = this.$.find(".Ldt-SlideShare-Container");
+        this.bindPopcorn("timeupdate","onTimeupdate");
+        this.onTimeupdate();
+    }
+}
+
+IriSP.Widgets.Slideshare.prototype.onTimeupdate = function() {
+    var _list = this.getWidgetAnnotationsAtTime();
+    if (_list.length) {
+        var _description = _list[0].description,
+            _isurl = /^https?:\/\//.test(_description),
+            _presentation = _description.replace(/#.*$/,''),
+            _slidematch = _description.match(/(#|\?|&)id=(\d+)/),
+            _slide = parseInt(_slidematch && _slidematch.length > 2 ? _slidematch[2] : 1),
+            _this = this;
+        if (_presentation !== this.lastSlide.presentation) {
+            if (_isurl) {
+                if (typeof this.oembedCache[_presentation] === "undefined") {
+                    var _ajaxUrl = "http://www.slideshare.net/api/oembed/1?url="
+                        + encodeURIComponent(_presentation)
+                        + "&format=jsonp&callback=?";
+                    IriSP.jQuery.getJSON(_ajaxUrl, function(_oembedData) {
+                        var _presmatch = _oembedData.html.match(/doc=([a-z0-9\-_%]+)/i);
+                        if (_presmatch && _presmatch.length > 1) {
+                            _this.oembedCache[_presentation] =  _presmatch[1];
+                            _this.insertSlideshare(_presmatch[1], _slide);
                         }
-                    } else {
-                        insertSlideshare(_presentation, _slide);
-                    }
-                }
-                if (_this.sync && _embedObject && typeof _embedObject.jumpTo === "function") {
-                    _embedObject.jumpTo(parseInt(_slide));
+                    });
+                } else {
+                    this.insertSlideshare(this.oembedCache[_presentation], _slide);
                 }
-                _lastPres = _presentation;
-                
-            });
-        });
+            } else {
+                this.insertSlideshare(_presentation, _slide);
+            }
+        }
+        if (_slide != this.lastSlide.slide && this.sync && this.embedObject && typeof this.embedObject.jumpTo === "function") {
+            this.embedObject.jumpTo(parseInt(_slide));
+        }
+        this.lastSlide = {
+            presentation: _presentation,
+            slide: _slide
+        }
+    } else {
+        if (this.lastSlide.presentation) {
+            this.$container.hide();
+            this.lastSlide = {
+                presentation: "",
+                slide: 0
+            }
+        }
     }
-};
+}
+
+IriSP.Widgets.Slideshare.prototype.insertSlideshare = function(_presentation, _slide) {
+    if (this.lastEmbedded === _presentation) {
+        if (this.embedObject && typeof this.embedObject.jumpTo === "function") {
+            this.embedObject.jumpTo(parseInt(_slide));
+        }
+    } else {
+        this.lastEmbedded = _presentation;
+        var _id = IriSP.Model.getUID(),
+            _params = {
+                allowScriptAccess: "always"
+            }
+            _atts = {
+                id: _id
+            },
+            _flashvars = {
+                doc : _presentation,
+                startSlide : _slide
+            };
+        this.$container.html('<div id="' + _id + '"></div>');
+        swfobject.embedSWF(
+            "http://static.slidesharecdn.com/swf/ssplayer2.swf",
+            _id,
+            this.embed_width,
+            this.embed_height,
+            "8",
+            null,
+            _flashvars,
+            _params,
+            _atts
+        );
+        this.embedObject = document.getElementById(_id);
+    }
+    this.$container.show();
+}