iens6 = document.all||document.getElementById
	ns4 = document.layers
	var speed=3
	var crossobj;
	var contentheight;
	
	function movedown()
	{
		if (iens6 && parseInt(crossobj.style.top) >= (contentheight*(-1)+144)) crossobj.style.top=parseInt(crossobj.style.top)-speed+"px"
		else if (ns4 && crossobj.top >= (contentheight*(-1)+100)) crossobj.top-=speed
		movedownvar = setTimeout("movedown()",20)
	}
	
	function moveup()
	{
		if (iens6 && parseInt(crossobj.style.top) <= -10) crossobj.style.top = parseInt(crossobj.style.top)+speed+"px"
		else if (ns4&&crossobj.top<=0) crossobj.top+=speed
		moveupvar = setTimeout("moveup()",20)
	}
	
	function getcontent_height(divname)
	{
		crossobj = document.getElementById(divname);
		contentheight = crossobj.offsetHeight;
	}