var xmlHttp=null;
function ajaxFunction(str, URL)
  {
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
	alert ("Your browser does not support AJAX!");
	return;
	} 

 //   xmlHttp.onreadystatechange=processReqChange;
    xmlHttp.open("POST",URL,false);
	xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
    xmlHttp.send(str); 

  }
  
function GetXmlHttpObject()
{
  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;
}