var layer;		var timer;		var scrollheight=155;				function init(id) {			layer = document.getElementById(id);			layer.style.top = '0px';		}		function gethoehe() {			return layer.offsetHeight;		}		function scrolldown(speed) {			if ( gethoehe() + parseInt(layer.style.top) > scrollheight) {				layer.style.top = parseInt(layer.style.top) - parseInt(speed) + 'px';				timer = window.setTimeout("scrolldown('"+speed+"')",25);			}		}		function scrollup(speed) {			if (  parseInt(layer.style.top) < 0) {				layer.style.top = parseInt(layer.style.top) + parseInt(speed) + 'px';				timer = window.setTimeout("scrollup('"+speed+"')",25);			}		}		function stopscroll() {			window.clearTimeout(timer);		}