var inicia = 0;

window.onload = function(){
	inicia_destaque();	
}

function exibe(val){
    d = document.getElementById("home_destaque");
	document.getElementById("scene").value = val;
	document.getElementById("tp").value = 0;
    var e = d.getElementsByTagName("div");
	for(i=0;i<e.length;i++)	{
		if(e[i].className=="non" && e[i].style.display==""){e[i].style.filter = "alpha(opacity=0)";e[i].style.opacity = 0;e[i].style.display="none";}
	}
	fadeIn("exibe"+val,2.0);
	g = document.getElementById("pag_destaque");
	var f = g.getElementsByTagName("a");
	for(i2=0;i2<f.length;i2++) if(f[i2].className=="ativo") f[i2].className="";
	document.getElementById("pag"+val).className="ativo";
	
}

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);
	target.style.display="";
	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 inicia_destaque(){
	sc = eval(document.getElementById("scene").value);
	tempo = eval(document.getElementById("tp").value);
	if(tempo >= 180 ){
		tempo=0;
		if(sc>=4){
			sc = 1;
		}else{
			sc += 1;
		}
		exibe(sc);
	}else{
		tempo += 1;
	}
	
	document.getElementById("tp").value = tempo;
	scenetimer = setTimeout("inicia_destaque()",20);
}

function mostrim(dv) {
    if (document.getElementById(dv).style.display == "")
        document.getElementById(dv).style.display = "none"
    else
        document.getElementById(dv).style.display = ""
}