ajax1

 <script type="text/javascript">
 var receiveReq=createXMLHttpRequest();
 function createXMLHttpRequest(){
    var httprequest=false;
    if (window.XMLHttpRequest)
    {
       httprequest=new XMLHttpRequest();
       if (httprequest.overrideMimeType)httprequest.overrideMimeType('text/xml');
     }else if (window.ActiveXObject){
        try {
           httprequest=new ActiveXObject("Msxml2.XMLHTTP");
        }catch (e){
           try{
              httprequest=new ActiveXObject("Microsoft.XMLHTTP");
           }catch (e){}
       }
     }
     return httprequest;
 }