function inhaltbild(welches)
{
	document.images["topic"].src = "images/topic_"+welches+".gif";
}
           
function zufall(von)
{
	zahl = Math.ceil(von*Math.random());
	return zahl;
}

function rotate()
{
	bildnr=zufall(5);
	document.images["headline"].src = "images/top_"+bildnr+".gif";

	setTimeout("rotate()",5000);
}