var cont = 0;
function limpacor(){
	var elis = document.getElementById('paginaBanner');
	var elementos = elis.getElementsByTagName('li');
		for(i=0;i<elementos.length;i++){
			if(elementos[i].className=='atual'){
				elementos[i].className='';
			}
		}
}

function trocaImg(linkvai, target, src, content, tipo, conta){	
	var banner = document.getElementById('imgbanner');
	var linke = document.getElementById('linke');
	 
	linke.href = linkvai;
	linke.target = target;
	banner.src = src;	
	fadeIn('imgbanner', 0.1);
	//limpacor();
	/*if(tipo == 1){
		document.getElementById(content).className = 'atual';
	}else{ 
		content.className = 'atual';
		cont=conta;
		window.clearInterval(e);
		
	}*/
	//rodaBanner();
	cont++;

}
function fadeOut(id, time) {
	target = document.getElementById(id);
	alpha = 100;
	timer = (time*1000)/5;
	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)/5;
	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;
}