function CreateXmlHttpReq(handler){var xmlhttp=null;if(window.XMLHttpRequest){xmlhttp=new XMLHttpRequest();}else if(window.ActiveXObject){try{xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");}catch(e){}}if(xmlhttp)xmlhttp.onreadystatechange=handler;return xmlhttp;}function XmlHttpPOST(xmlhttp,url,data){try{xmlhttp.open("POST",url,true);xmlhttp.send(data);}catch(e){}}function XmlHttpGET(xmlhttp,url){try{xmlhttp.open("GET",url,true);xmlhttp.send(null);}catch(e){}}