var http_request;
      	var userName;
 		function checkPartnerExist(loginname)
           {
           		userName="g"+loginname;
				if (window.XMLHttpRequest)
					 { // if Mozilla, Safari etc
					   http_request=new XMLHttpRequest()
					   if (http_request.overrideMimeType)
						 http_request.overrideMimeType('text/xml');
					  }
					  else if (window.ActiveXObject)
					  { // if IE
						try {
						  http_request=new ActiveXObject("Msxml2.XMLHTTP");
						}
						catch (e){
						  try{
							 http_request=new ActiveXObject("Microsoft.XMLHTTP");
						  }
						  catch (e){}
						}
					  }
					 http_request.onreadystatechange=process;
					 http_request.open("GET","CheckPartnerExist.jsp?userName="+loginname);
					 http_request.send(null);  

          }
          
          function process()
          {
             if(http_request.readyState==4)
             {
               var chkResult = http_request.responseText;   
			   
               if(chkResult==1)
               {    
                	alert(userName+"该帐号已经被使用,请另选一个!");
               }
               else if(chkResult==0)
               {
                 	alert(userName+"该帐号可以使用");
               }else{
               		alert("对不起，出现网络故障，请联系客服！");
               }
               		document.getElementById("checkBtn").value = "测试账号";
					document.getElementById("checkBtn").disabled = false;
            }
          }