Index: dhtmlxcommon.js
===================================================================
--- dhtmlxcommon.js	(revision 334)
+++ dhtmlxcommon.js	(revision 335)
@@ -139,6 +139,7 @@
         this.xmlDoc.setRequestHeader("Content-type", "text/xml");
 	} else
 		if (postMode) this.xmlDoc.setRequestHeader('Content-type','application/x-www-form-urlencoded');
+	this.xmlDoc.setRequestHeader("X-Requested-With","XMLHttpRequest");
 	this.xmlDoc.send(null||postVars);	
 	
 	if (!this.async) (new this.waitLoadFunction(this))();
@@ -640,4 +641,4 @@
 		return xmlDoc.xml;
 }
 
-//(c)dhtmlx ltd. www.dhtmlx.com
\ No newline at end of file
+//(c)dhtmlx ltd. www.dhtmlx.com