var http = null;
			
		if (window.XMLHttpRequest)
		{
			http = new XMLHttpRequest();
		}
		else 
			if (window.ActiveXObject)
			{
				http = new ActiveXObject("Microsoft.XMLHTTP");
			}
		
		function wechsel(id,go,lang)
			{		
					http.open("GET", "./classes/feedback.php?id="+id+"&go="+go+"&lang="+lang ,true);
					http.onreadystatechange = naechste;
					http.send(null);
			}
		function naechste()
			{
				if (http.readyState == 4) 
				{ 
					document.getElementById("next").innerHTML = http.responseText;
				}
			}
			
			
			
		function showVideoBox()
			{
				document.getElementById('overlay-video').style.display = 'block';
				document.getElementById('overlay-video-inner').style.display = 'block';
			}

		function hideVideoBox()
			{
				document.getElementById('overlay-video').style.display = 'none';
			}