var bilder = new Array(); 

		bilder[0] = '/css/papoo_vision/images/banner1.jpg'; 
		bilder[1] = '/css/papoo_vision/images/banner2.jpg'; 
		bilder[2] = '/css/papoo_vision/images/banner3.jpg'; 
		bilder[3] = '/css/papoo_vision/images/banner4.jpg'; 


		var arraylaenge = bilder.length; 
		var index = Math.floor(Math.random() * arraylaenge); 

		function Bildwechsel(){ 
		
			if (index == arraylaenge-1) 
			{ 
				
				index=0;
			} 
			else 
			{ 
				index++;
			} 
			document.getElementById("head").style.backgroundImage = 'url("'+bilder[index]+'")'; 

		} 

		function Bildanzeige () { 
			
			 document.getElementById("head").style.backgroundImage = 'url("'+bilder[index]+'")'; 
			 
			 Bildwechsel(); 
			 

		}