var foto=new Array();

	foto[0]=["images/2.jpg"]           	
	foto[1]=["images/3.jpg"] 
	foto[2]=["images/4.jpg"] 
	       		 

 var speed=4000;
 var pos=0;

function wechseln () {


if (!(document.images)) {return;}

 document.bild.src=foto[pos++];


 if (pos == foto.length) { pos = 0; }
 setTimeout("wechseln();",speed);
}