var xmlHttp;		
		
		function GetXmlHttpObject() { 
			var objXMLHttp=null;
			try {
				  objXMLHttp=new XMLHttpRequest();
			  } catch (e) {
				  try {
				    objXMLHttp=new ActiveXObject("Msxml2.XMLHTTP");
				  } catch (e) {
				  	try {
				    	objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP");
				    }
				    catch (e) {
				      alert("Your browser does not support AJAX!");
				      return false;
				    }
				  }
				}
			return objXMLHttp;
		}