function getHttpReq(){var httpReq;if(window.XMLHttpRequest&&!(window.ActiveXObject)){try{httpReq=new XMLHttpRequest();}catch(e){}}if(window.ActiveXObject){try{httpReq=new ActiveXObject("Msxml2.XMLHTTP");}catch(e){try{httpReq=new ActiveXObject("Microsoft.XMLHTTP");}catch(e){}}}return httpReq;}function getXmlDoc(httpReq,filename){var xmlDoc;httpReq.open("GET",filename,false);httpReq.send(null);xmlDoc=httpReq.responseXML;if(httpReq.status!=404&&httpReq.status!=403){return xmlDoc;}else{return null;}}