var crossobj = new Object();
function initScroll(){
	if (iens6){
		crossobj=document.getElementById? document.getElementById("scrollContent") : document.all.content
		if (crossobj)
			var contentheight=crossobj.offsetHeight
	}
	else if (ns4){
		crossobj=document.nscontainer.document.nscontent
		if (crossobj)
			var contentheight=crossobj.clip.height
	}
	getcontent_height();
}

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 (crossobj){
	if (iens6){
		contentheight=crossobj.offsetHeight
		var mainFrame=document.getElementById("frameA")?document.getElementById("frameA"):document.getElementById("frameB");
		if ((crossobj.offsetHeight+15) < mainFrame.offsetHeight){
			document.getElementById("scrollControls").style.display = 'none';
		}else{
			document.getElementById("scrollControls").style.display = 'block';
		}
	}
	else if (ns4)
		document.nscontainer.document.nscontent.visibility="show"
	}
}