function movedown(){
if (window.moveupvar) clearTimeout(moveupvar)
if (iens6&&parseInt(crossobj.style.top)>=(contentheight*(-1)+100))
	crossobj.style.top=parseInt(crossobj.style.top)-speed+"px"
else if (ns4&&crossobj.top>=(contentheight*(-1)+100))
	crossobj.top-=speed
	movedownvar=setTimeout("movedown()",20)
}

function moveup(){
if (window.movedownvar) clearTimeout(movedownvar)
if (iens6&&parseInt(crossobj.style.top)<=0)
	crossobj.style.top=parseInt(crossobj.style.top)+speed+"px"
else if (ns4&&crossobj.top<=0)
	crossobj.top+=speed
	moveupvar=setTimeout("moveup()",20)
}

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

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

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