var xmlHttp;
var xmlTarget = "";

function stateChanged() 
{ 
	if (xmlHttp.readyState==4)
	{
		if ( xmlHttp.responseXML ) {

            procXML(xmlHttp.responseXML,xmlTarget);
		} else {
			procXML(false,xmlTarget);
		}
	}
}

function GetXmlHttpObject()
{
	var xmlHttp=null;
	try
	  {
	  // Firefox, Opera 8.0+, Safari
	  xmlHttp=new XMLHttpRequest();
	  }
	catch (e)
	  {
	  // Internet Explorer
	  try
	    {
	    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
	    }
	  catch (e)
	    {
	    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
	    }
	  }
	return xmlHttp;
}


///////////


function getResult(url,target)
{

    if ( xmlTarget != "" ) {
		alert("Please retry in a moment.");
        return false;
	}
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
	{
	  alert ("Your browser does not support AJAX!");
	  return;
	} 

    xmlTarget = target;
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url + "&rand=" + Math.random(),true);
	xmlHttp.send(null);

}