var tempo;

function ScrollD() {
	ScrollRelease();
	tempo = setInterval("ScrollDown()", 100);
}

function ScrollU() {
	ScrollRelease();
	tempo = setInterval("ScrollUp()", 100);
}

function ScrollDown() {
	xGetElementById("Conteudo").scrollTop += 5;
}

function ScrollUp() {
	xGetElementById("Conteudo").scrollTop -= 5;
}

function ZeraScroll(div) {
	if (div != "") {
		xGetElementById(div).scrollTop = 0;
		ScrollRelease();
	}
}

function ScrollRelease() {
	clearInterval(tempo);
}

function xGetElementById(e) {
	if (typeof(e) != 'string') return e;
	if (document.getElementById) e = document.getElementById(e);
	else if (document.all) e = document.all[e];
	else e = null;
	return e;
}