// JavaScript Document
var posY = 0;
var posFinalY;
var startScrollUp = false;
var startScrollDown = false;
var divLimite;
var divToScroll;
var contentH;
var hiddenContentH;
var isIE = navigator.appName.indexOf("Microsoft");

window.onload = loadVariables;

function loadVariables()
{
	{
		divLimite = document.getElementById("divLimite");
		divToScroll = document.getElementById("divConteudo");
		contentW = divLimite.clientWidth;
		contentH = divLimite.clientHeight;
		hiddenContentW = divToScroll.offsetWidth;
		hiddenContentH = divToScroll.offsetHeight;
		posFinalY = (hiddenContentH - contentH) * -1;
	}


/*
	alert("contentW: " + contentW + "\n" + 
		"contentH: " + contentH + "\n" + 
		"hiddenContentW: " + hiddenContentW + "\n" + 
		"hiddenContentH: " + hiddenContentH + "\n");
*/
}

function scrollDown()
{
	// se tiver scroll
	if(startScrollDown)
	{
		if(posY > posFinalY)
		{
			posY--;
			divToScroll.style.top = posY;
		}
		else
		{
			startScrollDown = false;
			self.clearTimeout();
		}
		self.setTimeout("scrollDown()",5);
	}
}

function scrollUp()
{

	if(startScrollUp)
	{
		if(posY < 0)
		{
			posY++;
			divToScroll.style.top = posY;
			self.setTimeout("scrollUp()",5);
		}
		else
			self.clearTimeout();
	}
	else
	{
		startScrollUp = false;
		self.clearTimeout();
	}
}