var t;
var doLoop = true;

function scrollDivToTop(divid)
{
	var div = document.getElementById(divid);

	if (div.scrollTop>0 && doLoop)
	{
		div.scrollTop-=3;
		t = setTimeout("scrollDivToTop('" + divid + "')", 1);
	}
	else clearTimeout(t);
}

function scrollDivToBottom(divid)
{

	var div = document.getElementById(divid);

	if (div.scrollTop<999999999 && doLoop)
	{
		div.scrollTop+=3;
		t = setTimeout("scrollDivToBottom('" + divid + "')", 1);
	}
	else clearTimeout(t);
}

function stop()
{
	doLoop = false;
	setTimeout('doLoop = true;', 5);
}