var interval
startPosition=0
topPosition=100
endPosition=100
speed=30

function scrollit()
{
if (startPosition!=150)
	{
	startPosition=startPosition+1
	topPosition=topPosition-1
	document.getElementById('display').style.clip="rect(" + (startPosition + 1) + " 100 " + (startPosition + endPosition) + " 0)"
	document.getElementById('display').style.top=topPosition
	interval=setTimeout("scrollit()",speed)
	}
else
	{
	startPosition=0
	topPosition=100
	endPosition=100
	interval=setTimeout("scrollit()",speed)
	}
}

function stopinterval()
{
clearTimeout(interval)
}