var xmlHttpObject = false;

if (typeof XMLHttpRequest != 'undefined') 
{
    xmlHttpObject = new XMLHttpRequest();
}
if (!xmlHttpObject) 
{
    try 
    {
        xmlHttpObject = new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch(e) 
    {
        try 
        {
            xmlHttpObject = new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch(e) 
        {
            xmlHttpObject = null;
        }
    }
}

function loadContent(theFile)
{	
	//alert ("sourcefile: " + theFile);
   	xmlHttpObject.open('get',theFile);
    xmlHttpObject.onreadystatechange = handleContent;
    xmlHttpObject.send(null);
   // return false;
}

function handleContent()
{
	//alert ("function handleContent aufgerufen ...");
    if (xmlHttpObject.readyState == 4)
    {
    	//alert ("sollte jetzt funken!");
       	document.getElementById('showcase').innerHTML = xmlHttpObject.responseText;
        document.getElementById('showcase').style.visibility = "visible";
    }
}

function destroyContent()
{
	document.getElementById('showcase').innerHTML = " ";
	document.getElementById('showcase').style.visibility = "hidden";
}