// JavaScript Document
function mudar_destaque(dest,total)
{
	var pre="area_atuacao";
	var pre2="link_destaque0";
	var ord_destaque = document.getElementById("destaque_atual").value;
	var div = pre + ord_destaque;
	//alert("div: " + div);
	document.getElementById(div).style.display="none";
	var link_div=pre2+ord_destaque;
	document.getElementById(link_div).className="sel";
	fadeOut(div,0.3);
	
	if(dest=="")
	{
		if(ord_destaque<total)
			ord_destaque++;
		else
			ord_destaque=1;
	}else
		{
			ord_destaque = dest;
		}
	var div2 = pre + ord_destaque;
	var link_div2=pre2+ord_destaque;
	document.getElementById(link_div2).className="sel_d";
	document.getElementById("destaque_atual").value = ord_destaque;
	fadeIn(div2,0.3);
	document.getElementById(div2).style.display="block";
	
}

//###fadeIn fadeOut
function fadeOut(id, time) {
	target = document.getElementById(id);
	alpha = 100;
	timer = (time*1000)/50;
	var i = setInterval(
			function() {
				if (alpha <= 0)
					clearInterval(i);
				setAlpha(target, alpha);
				alpha -= 2;
			}, timer);
}

function fadeIn(id, time) {
	target = document.getElementById(id);
	alpha = 0;
	timer = (time*1000)/50;
	var i = setInterval(
			function() {
				if (alpha >= 100)
					clearInterval(i);
				setAlpha(target, alpha);
				alpha += 2;
			}, timer);
}

function setAlpha(target, alpha) {
	target.style.filter = "alpha(opacity="+ alpha +")";
	target.style.opacity = alpha/100;
}

function limpa_campo(id)
{
	var valor_default=document.getElementById(id).title;
	var valor_atual=document.getElementById(id).value;
	if(valor_atual == valor_default)
		document.getElementById(id).value="";
	else
		{
			if(valor_atual =="")
				document.getElementById(id).value=valor_default;
		}
}

function ir(url){
	location.href=url;	
}