function movedown(){
		if (window.moveupvar) clearTimeout(moveupvar)
		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()",50)
	}

	function moveup(){
		if (window.movedownvar) clearTimeout(movedownvar)
		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()",50)
	}

	function stopscroll(){
		if (window.moveupvar) clearTimeout(moveupvar)
		if (window.movedownvar) clearTimeout(movedownvar)
	}

	function movetop(){
		stopscroll()
		if (iens6)
			crossobj.style.top=0
		else if (ns4)
			crossobj.top=0
	}

	function getcontent_height(){
		if (iens6)
			contentheight=crossobj.offsetHeight
		else if (ns4)
			document.nscontainer.document.nscontent.visibility="show"
	}