var scrollpixel = 0;
var scrollerheight;
function startscroll() {
	var div = document.getElementById('scrollcontent');
	scrollerheight = document.getElementById('scrollbox').clientHeight;
	if (div.clientHeight > scrollerheight)
		setInterval("realscroll()",100);
}
function realscroll() {
	var div = document.getElementById('scrollcontent');
	div.style.top = scrollpixel + 'px';
	scrollpixel = scrollpixel-1;
	if (Math.abs(scrollpixel) > div.clientHeight) scrollpixel = scrollerheight;
}