function movedown(){
		if (iens6&&parseInt(crossobj.style.top)>=(contentheight*(-1)+100))
		crossobj.style.top=parseInt(crossobj.style.top)-speed
		else if (ns4&&crossobj.top>=(contentheight*(-1)+100))
		crossobj.top-=speed
		movedownvar=setTimeout("movedown()",100)
		}
		
function moveup(){
		if (iens6&&parseInt(crossobj.style.top)<=0)
		crossobj.style.top=parseInt(crossobj.style.top)+speed
		else if (ns4&&crossobj.top<=0)
		crossobj.top+=speed
		moveupvar=setTimeout("moveup()",100)
		}
		
function getcontent_height(){
		if (iens6)
		contentheight=crossobj.offsetHeight
		else if (ns4)
		document.nscontainer.document.nscontent.visibility="show"
		}
		window.onload=getcontent_height
		
function stop_scrolling_up(){
		clearTimeout(moveupvar)
		}
		
function stop_scrolling_down(){
		clearTimeout(movedownvar)
		}