// JavaScript Document
var valor=1;
document.onclick=check;
document.onmouseover=check2;
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 check(e)
{
	var target = (e && e.target) || (event && event.srcElement);
	var obj = document.getElementById('mydiv');
	var obj2 = document.getElementById('sho');
	var obj3 = document.getElementById('menuprodutos');
	var obj4 = document.getElementById('sho2');
	var parent = checkParent(target);	
	if(parent)
	{
	  obj.style.display='none';
	  obj2.src="images/extranet_out.png";
	  if (obj3 != null)
	  {
	    obj3.style.visibility = "hidden"
	  }
	}
	//if(target==obj2){obj.style.display='block'}
}

function check2(e)
{
	var target = (e && e.target) || (event && event.srcElement);
	var obj = document.getElementById('mydiv');
	var obj2 = document.getElementById('sho');
	var obj3 = document.getElementById('menuprodutos');
	var obj4 = document.getElementById('sho2');
	var parent = checkParent(target);
	//if(parent){obj.style.display='none'}
	if(target==obj2)
	{
	obj.style.display='block';
	obj2.src="images/extranet_over.jpg";
	}
	else if (target==obj4)
	{
	obj3.style.visibility = "visible"
	}
}	
	
function check3(e)
{
	var target = (e && e.target) || (event && event.srcElement);
	var obj = document.getElementById('mydiv');
	var obj2 = document.getElementById('sho');
	var obj3 = document.getElementById('menuprodutos');
	var obj4 = document.getElementById('sho2');
	var parent = checkParent(target);
	//if(parent){obj.style.display='none'}
	if(target==obj4)
	{
	obj4.style.display='block';
	obj3.style.visibility = "visible"
	}
}

function checkParent(t)
{
	while(t.parentNode)
	{
		if(t==document.getElementById('mydiv'))
	{
	return false
	}
		t=t.parentNode
	}
	return true
}


function mudarauto()
{
	if (valor==1)
	{
		fadeOut('banner', 0.2);
		valor = 2;
	}
	else
	{
		fadeIn('banner', 0.2);
		valor = 1;
	}
		setTimeout("mudarauto()",15000);
}

function mudar()
{
fadeIn('banner', 0.2)
valor = 1;
}

function mudar02()
{
fadeOut('banner', 0.2)
valor = 2;
}

function start() 
{ 
	mudarauto(); 
} 

function entrar()
{
	document.getElementById('black').style.visibility="visible";
}

function sair()
{
	document.getElementById('black').style.visibility="hidden";
}

function menu_produtos()
{
if (document.getElementById('menuprodutos').style.visibility == "hidden")
{
document.getElementById('menuprodutos').style.visibility = "visible";
}
else
{
document.getElementById('menuprodutos').style.visibility = "hidden";
}
}