loadTime = new Date();

function ajaxGet(getString)
{
var xmlHttp;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    try
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    catch (e)
      {
      //alert("Your browser does not support AJAX!");
      return false;
      }
    }
  }
  xmlHttp.onreadystatechange=function()
    {
    if(xmlHttp.readyState==4)
      {
       //
      }
    }
  xmlHttp.open("GET",getString,true);
  xmlHttp.send(null);
}



function sendtime() {
	unloadTime = new Date();
	//minutes = (unloadTime.getMinutes() - loadTime.getMinutes());
	//seconds = (unloadTime.getSeconds() - loadTime.getSeconds());
	time = (unloadTime.getTime() - loadTime.getTime())/1000; //(seconds + (minutes * 60));
	refferer = 
	ajaxGet('visittime.php?time='+time+'&refer='+document.referrer+'&curr='+location.href);
}

  function addEvent(obj, evType, fn){ 
	
	if (obj.addEventListener){ 
		obj.addEventListener(evType, fn, false); //last param false if you want the ie buble b
		return true; 
	} else if (obj.attachEvent){ 
		var r = obj.attachEvent("on"+evType, fn); 
		return r; 
	} else { 
	return false; 
	} 
}

addEvent(window,"unload",function(e){sendtime();});