var ban_actual;
var ban_i=0;
window.onload=function() {
	for(i=1;i<=ban_total;i++) {
		fade_step("ban"+i,0,0,0);
		document.getElementById("ban"+i).style.visibility="visible";
	}
	fade("ban1",0,1,0.1);
	ban_actual=1;
	setInterval(banprox,7000);
};
function banprox() {
	ban_i++;
	var prox=ban_actual+1;
	if(prox>ban_total) prox=1;

	if(prox==ban_actual) return;
	
	//fade("ban"+ban_actual,1,0,0.1);
	fade_step("ban"+prox,0,0,0);
	document.getElementById("ban"+prox).style.zIndex=100+ban_i;
	fade("ban"+prox,0,1,0.1);
	
	ban_actual=prox;
}