var speed=1

var currentpos=0,alt=1,curpos1=0,curpos2=-1,doit=0

function init()
	{
	doit = 1
	startWindow()
	}
    
function scrolltheWindow()
	{
	if(doit == 1)
		{
		if (document.all)
			temp=document.body.scrollTop
		else
			temp=window.pageYOffset
		if (alt==0)
			alt=1
		else
			alt=0
		if (alt==0)
			curpos1=temp
		else
			curpos2=temp
		if (curpos1!=curpos2)
			{
			if (document.all)
				currentpos=document.body.scrollTop+speed
			else
				currentpos=window.pageYOffset+speed
				window.scroll(0,currentpos)
			}
		else
			{
			currentpos=0
			window.scroll(0,currentpos)
			}
		}
	}
function startWindow()
	{
	setInterval("scrolltheWindow()",25)
	}
    
window.onload=init