var xmlHttp


function showhide(divid) {
        obj = document.getElementById(divid);
        obj.style.display = obj.style.display == 'none' ? 'block' : 'none';
		objtwo = document.getElementById('livemessage_bg');
        objtwo.style.display = objtwo.style.display == 'none' ? 'block' : 'none';
    }


function showUser(str)
{ 

myid = str;

xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
var url="js/heartbeat.php"
url=url+"?q="+str

url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}

function stateChanged() 

{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 

 document.getElementById("txtHint").innerHTML=xmlHttp.responseText 

 setTimeout('showUser(myid)', 50000);
 } 
 
}

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;
}