var xmlhttp;

function changeroom(room)
{
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
	  {
	  alert ("Browser does not support HTTP Request");
	  return;
	  }
	var url="roominfo.php";
	url=url+"?room="+room;
	url=url+"&sid="+Math.random();
	url=url+"&method=javascript";
	xmlhttp.open("GET",url,true);
	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.send(null);
}

function stateChanged()
{
	if (xmlhttp.readyState==4)
	{
	document.getElementById("roomcont").innerHTML=xmlhttp.responseText;
	xmlhttp.close();
	}
}

function GetXmlHttpObject()
	{
	if (window.XMLHttpRequest)
	  {
	  // code for IE7+, Firefox, Chrome, Opera, Safari
	  return new XMLHttpRequest();
	  }
	if (window.ActiveXObject)
	  {
	  // code for IE6, IE5
	  return new ActiveXObject("Microsoft.XMLHTTP");
	  }
	return null;
	}