var delay=12000;
var num=0;

var fotos=new Array(	'/home/mongolei-01.jpg',
			'/home/mongolei-01.jpg',
			'/home/mongolei-02.jpg',
			'/home/mongolei-01.jpg',
			'/home/mongolei-01.jpg',
			'/home/mongolei-01.jpg');


function change() {
	document.getElementById('h1').src=fotos[num];
	document.getElementById('h1').style.opacity=1;
	num++;
	if (num == 3 ) {
		num = 1;
     	}
	document.getElementById('h2').src=fotos[num];
	fade();
	preload=num+1;
	var preloadimage = new Image();
	preloadimage.src = fotos[preload];
	setTimeout("change();", delay);
}

function fade(step) {
	var e1 = document.getElementById('h1');
	step = step || 0;
	e1.style.opacity = (100-step)/100;
	e1.style.filter = "alpha(opacity=" + (100-step) + ")";
	step = step + 2;
	if (step <= 100) {
		window.setTimeout(function() { fade(step); }, 1);
	} else {
	      window.clearInterval(this.proc);
	}
}
window.onload = change;