Index: trunk/kernel/admin_templates/incs/ajax.js
===================================================================
diff -u -r5042 -r5062
--- trunk/kernel/admin_templates/incs/ajax.js	(.../ajax.js)	(revision 5042)
+++ trunk/kernel/admin_templates/incs/ajax.js	(.../ajax.js)	(revision 5062)
@@ -2,6 +2,7 @@
 
 Request.timeout = 5000; //5 seconds
 Request.method = 'GET';
+Request.contentType = '';
 Request.params = null;
 
 Request.makeRequest = function(p_url, p_busyReq, p_progId, p_successCallBack, p_errorCallBack, p_pass) {
@@ -39,7 +40,14 @@
 		}
 		else {
 			req.setRequestHeader('If-Modified-Since', 'Sat, 1 Jan 2000 00:00:00 GMT');
-			req.send(null);
+			if (Request.contentType) {
+				req.setRequestHeader('Content-type', Request.contentType);
+				req.send(null);
+				Request.contentType = '';
+			}
+			else {
+				req.send(null);
+			}
 		}
 		
 		var toId = window.setTimeout( function() {if (p_busyReq) req.abort();}, Request.timeout );
Index: trunk/kernel/admin_templates/incs/tree.js
===================================================================
diff -u -r5002 -r5062
--- trunk/kernel/admin_templates/incs/tree.js	(.../tree.js)	(revision 5002)
+++ trunk/kernel/admin_templates/incs/tree.js	(.../tree.js)	(revision 5062)
@@ -326,28 +326,8 @@
 TreeFolder.prototype.folderClick = function(img)
 {
 	if (this.LateLoadURL && !this.Loaded) {
-
-		request = getXMLHTTPObject('text/xml');
-
-		if (request && request.readyState != 0) {
-			request.abort();
-		}
-		request.open('POST', this.LateLoadURL, true);
-		request.setRequestHeader("referer", this.LateLoadURL);
-		obj = this;
-		function processLateLoad() {
-			if (request.readyState == 4) {
-				if (request.status == 200) {
-					obj.ProcessXMLNode(request.responseXML);
-					obj.Loaded = true;
-					obj.Render();
-					obj.locateTopItem().updateLastNodes();
-					obj.expand();
-				}
-			}
-		}
-		request.onreadystatechange = processLateLoad;
-		request.send('is_xml=1');
+		Request.contentType = 'text/xml';
+		Request.makeRequest(this.LateLoadURL, false, '', this.successCallback, this.errorCallback, this);
 	}
 
 	if (this.Expanded) {
@@ -358,6 +338,18 @@
 	}
 }
 
+TreeFolder.prototype.successCallback = function ($request, $object) {
+	$object.ProcessXMLNode($request.responseXML);
+	$object.Loaded = true;
+	$object.Render();
+	$object.locateTopItem().updateLastNodes();
+	$object.expand();
+}
+
+TreeFolder.prototype.errorCallback = function($request, $params) {
+	alert('AJAX ERROR: ' + Request.getErrorHtml($request));
+}
+
 TreeFolder.prototype.expand = function(mode)
 {
 	if (!isset(mode)) mode = 0;
Index: trunk/kernel/admin_templates/tree.tpl
===================================================================
diff -u -r5002 -r5062
--- trunk/kernel/admin_templates/tree.tpl	(.../tree.tpl)	(revision 5002)
+++ trunk/kernel/admin_templates/tree.tpl	(.../tree.tpl)	(revision 5062)
@@ -15,6 +15,7 @@
 	}
 </script>
 
+<script src="incs/ajax.js"></script>
 <script src="incs/tree.js"></script>
 
 <style type="text/css">