diff -r 40909e8d6855 -r 5a5024bc74e6 integration/js/model.js
--- a/integration/js/model.js	Fri Nov 09 18:56:29 2012 +0100
+++ b/integration/js/model.js	Fri Nov 16 19:23:20 2012 +0100
@@ -25,6 +25,13 @@
     getUID : function() {
         return uidbase + pad(4, (++uidincrement % 0x10000), 16) + "-" + rand16(4) + "-" + rand16(6) + rand16(6);
     },
+    isLocalURL : function(url) {
+        var matches = url.match(/^(\w+:)\/\/([^/]+)/);
+        if (matches) {
+            return(matches[1] === document.location.protocol && matches[2] === document.location.host)
+        }
+        return true;
+    },
     regexpFromTextOrArray : function(_textOrArray, _testOnly, _iexact) {
         var _testOnly = _testOnly || false,
             _iexact = _iexact || false;
@@ -1057,10 +1064,18 @@
 
 Model.RemoteSource.prototype.get = function() {
     this.status = Model._SOURCE_STATUS_WAITING;
-    var _this = this;
-    this.serializer.loadData(this.url, function(_result) {
-        _this.deSerialize(_result);
-        _this.handleCallbacks();
+    var _this = this,
+        urlparams = this.url_params || {},
+        dataType = (Model.isLocalURL(this.url) ? "json" : "jsonp");
+    urlparams.format = dataType;
+    ns.jQuery.ajax({
+        url: this.url,
+        dataType: dataType,
+        data: urlparams,
+        success: function(_result) {
+            _this.deSerialize(_result);
+            _this.handleCallbacks();
+        }
     });
 }
 
@@ -1076,10 +1091,12 @@
         throw "Error : Model.Directory.remoteSource(configuration): configuration.url is undefined";
     }
     var _config = ns._({ directory: this }).extend(_properties);
-    if (typeof this.remoteSources[_properties.url] === "undefined") {
-        this.remoteSources[_properties.url] = new Model.RemoteSource(_config);
+    _config.url_params = _config.url_params || {};
+    var _hash = _config.url + "?" + ns.jQuery.param(_config.url_params);
+    if (typeof this.remoteSources[_hash] === "undefined") {
+        this.remoteSources[_hash] = new Model.RemoteSource(_config);
     }
-    return this.remoteSources[_properties.url];
+    return this.remoteSources[_hash];
 }
 
 Model.Directory.prototype.newLocalSource = function(_properties) {