iens6=document.all||document.getElementById;
		
var speed=5;

if (iens6){
	var crossobj=document.getElementById? document.getElementById("conteudo") : document.all.content;
	var tam=crossobj.offsetHeight;
	crossobj.style.top = 0;
}

function moveDown(){
	if (iens6 && parseInt(crossobj.style.top)>=-tam+300)
		crossobj.style.top=parseInt(crossobj.style.top)-speed;
	moveDownvar = setTimeout("moveDown()",0);
}

function moveUp(){
	if (iens6 && parseInt(crossobj.style.top)<=0)
		crossobj.style.top=parseInt(crossobj.style.top)+speed;
	moveUpvar = setTimeout("moveUp()",0);
}

function getcontent_height(){
	if (iens6)
		tam=crossobj.offsetHeight;
}

function incSpeed(qnt){
	speed+=qnt;
}

function defSpeed(){
	speed=5;
}
window.onload=getcontent_height();