var xmlHttp;

update();






function update() {
	xmlHttp=GetXmlHttpObject();
	var url="forumajax.php?update=true&sid="+Math.random();
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);	
	setTimeout('update()',4000);
}








function stateChanged() { 
	if (xmlHttp.readyState==4) { 
		document.getElementById("ajaxfield").innerHTML=xmlHttp.responseText;
	}
}







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;
}