var xmlhttp;
function loadXMLDoc(url)
{
xmlhttp=null;
if (window.XMLHttpRequest)
  {// code for Firefox, Opera, IE7, etc.
  xmlhttp=new XMLHttpRequest();
  }
else if (window.ActiveXObject)
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
if (xmlhttp!=null)
  {
  xmlhttp.onreadystatechange=state_Change;
  xmlhttp.open("GET",url,true);
  xmlhttp.send(null);
  }
else
  {
  alert("Your browser does not support XMLHTTP.");
  }
}

function state_Change()
{
if (xmlhttp.readyState==4)
  {// 4 = "loaded"
  if (xmlhttp.status==200)
    {// 200 = "OK"
   //document.getElementById('T1').innerHTML=xmlhttp.responseText;
   theSelectedBackground = xmlhttp.responseText;
   		if (theSelectedBackground != "") {
  		 newImage = "url(/images/backgrounds/" + theSelectedBackground + ".jpg)";
		 } 
		 else 
		 {
		 newImage = "url(/images/backgrounds/1.jpg)";
		 }
	document.getElementById('body').style.backgroundImage = newImage;
    }
  else
    {
    alert("Problem retrieving data:" + xmlhttp.statusText);
    }
  }
}