diff -r 2edab45f0e90 -r 62da43e72e30 src/js/serializers/JSONSerializer.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/js/serializers/JSONSerializer.js	Thu Oct 20 15:59:28 2011 +0200
@@ -0,0 +1,38 @@
+
+IriSP.JSONSerializer = function(DataLoader, url) {
+  IriSP.Serializer.call(this, DataLoader, url);
+};
+
+IriSP.JSONSerializer.prototype = IriSP.Serializer;
+
+IriSP.JSONSerializer.prototype.serialize = function(data) {
+  return JSON.stringify(data);
+};
+
+IriSP.JSONSerializer.prototype.deserialize = function(data) {
+  return JSON.parse(data);
+};
+
+IriSP.JSONSerializer.prototype.sync = function(callback) {
+  /* we don't have to do much because jQuery handles json for us */
+  
+  /* a wrapper to get a closure because we lose this in callbacks */
+  var wrapper = function(obj) {
+    return function(data) {    
+      obj._data = data;
+      // sort the data too
+      obj._data["annotations"].sort(function(a, b) 
+          { var a_begin = +a.begin;
+            var b_begin = +b.begin;
+            return a_begin - b_begin;
+          });
+      callback(data);
+    }
+  };
+  
+  this._DataLoader.get(this._url, wrapper(this));
+};
+
+IriSP.JSONSerializer.prototype.currentMedia = function() {  
+  return this._data.medias[0]; /* FIXME: don't hardcode it */
+};