diff -r 03967b6ada7c -r 4c7b33bf2795 src/widgets/Mediafragment.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/widgets/Mediafragment.js	Thu Apr 26 19:18:57 2012 +0200
@@ -0,0 +1,44 @@
+IriSP.Widgets.Mediafragment = function(player, config) {
+    IriSP.Widgets.Widget.call(this, player, config);
+    this.last_hash = "";
+    window.onhashchange = this.functionWrapper("goToHash");
+    this.player.bindPopcorn("pause","setHashToTime");
+}
+
+IriSP.Widgets.Mediafragment.prototype = new IriSP.Widgets.Widget();
+
+IriSP.Widgets.Mediafragment.prototype.draw = function() {
+    this.goToHash();
+}
+
+IriSP.Widgets.Mediafragment.prototype.goToHash = function() {
+    if (document.location.hash !== this.last_hash) {
+        this.last_hash = document.location.hash;
+        var _tab = this.last_hash.split("=");
+        if (_tab[0] === '#id') {
+            var _annotation = this.source.getElement(_tab[1]);
+            if (typeof _annotation !== "undefined") {
+                this.player.popcorn.currentTime(_annotation.begin.getSeconds());
+            }
+        }
+        if (_tab[0] === '#t') {
+            this.player.popcorn.currentTime(_tab[1]);
+        }
+    }
+}
+
+IriSP.Widgets.Mediafragment.prototype.setHashToAnnotation = function(_annotationId) {
+    this.last_hash = '#id=' + this.source.unNamespace(_annotationId);
+    
+}
+
+IriSP.Widgets.Mediafragment.prototype.setHashToTime = function() {
+    this.last_hash = '#t=' + this.source.popcorn.currentTime();
+}
+
+IriSP.Widgets.Mediafragment.prototype.setHash = function(_hash) {
+    if (this.last_hash !== _hash) {
+        this.last_hash = _hash;
+        document.location.hash = _hash;
+    }
+}
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