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;
}
	
function doUpdate(qrystr, page, div, msg)
	{ 
	var xmlHttp;
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
		{
		alert ("Browser does not support HTTP Request");
		return;
		} 
	var url=page;
	url+="?"+qrystr;
	url+="&sid="+Math.random();
	//xmlHttp.onreadystatechange=stateChanged
	xmlHttp.onreadystatechange=function()
		{ 
		if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
			{
			var x = xmlHttp.responseText;
			if(msg){alert(x);}
			else if (document.getElementById(div))
				{document.getElementById(div).innerHTML = x;}
            
			} 
		} 
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
	}

function getmedia(type, obj)
    {
    var tag	= document.getElementById("zeitmenu").getElementsByTagName("li");
    for (var i=0; i	< tag.length; i++) 
        { tag[i].className = "normal"; }
    obj.className = "active";
    document.getElementById("zeitlist").innerHTML = "<img src='/images/loading.gif' hspace='150' vspace='100' />";
    doUpdate("", "/common/ajax/"+type+".aspx", "zeitlist", "");
    }