var http_request=false;
     function send_request(sort1,sort2)
     {   // alert(sort1);
          //alert(sort2);
        http_request=false;
       if(window.XMLHttpRequest)
       { 
			http_request=new XMLHttpRequest();
			if(http_request.overrideMimeType)
			{
				http_request.overideMimeType('text/xml');
			}
        }
       else if(window.ActiveXObject)
        {
             try{ hrrp_request=new ActiveXObject("Msxm12.XMLHTTP");}
             catch(e) { 
                          try{ http_request=new ActiveXObject("Microsoft.XMLHTTP");}
                          catch(e){}
                      }
       }
      if(!http_request) {
          window.alert("不能创建XMLHTTPRequest 对象实例");
          return false;
        }
		
       http_request.open("GET","/ad_count.aspx?sort1="+sort1+"&sort2="+sort2,false);
       http_request.send(null);
 

	   //alert(sort1);
     }