function GetXmlHttpObject(handler){var objXMLHttp=null;var ua=navigator.userAgent.toLowerCase();if(!window.ActiveXObject)objXMLHttp=new XMLHttpRequest();else if(ua.indexOf('msie 5')==-1)objXMLHttp=new ActiveXObject("Msxml2.XMLHTTP");else objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP");return objXMLHttp}