var tab_image = new Array(2);
var tab_url = new Array(2);
var tab_target = new Array(2);
for (var i=0; i<2; i++) { tab_image[i] = new Image(); }
tab_image[0].src = '/media/images/bigImg1.jpg';
tab_url[0] = '';
tab_target[0] = '';
tab_image[1].src = '/media/images/bigImg2.jpg';
tab_url[1] = '';
tab_target[1] = '';
var index = 1;
var tempo = 5000; // in milisecond
var incrTrs = 10;
var tempoTrs = 600 / incrTrs;
function changeImage( imageId, divId ) {
	image = document.getElementById( imageId );
	setOpacity( image, 0 );
	if( index >= tab_image.length ) { index = 0; }
	image.src = tab_image[index++].src;
	image.style.visibility = 'visible';
	fadeIn( imageId, divId, 0 );
}
function setOpacity(obj, opacity) {
	opacity = (opacity == 100)?99.999:opacity;
	obj.style.filter = "alpha(opacity:"+opacity+")";
	obj.style.KHTMLOpacity = opacity/100;
	obj.style.MozOpacity = opacity/100;
	obj.style.opacity = opacity/100;
}
function fadeIn(objId,divId,opacity) {
	if (document.getElementById) {
		obj = document.getElementById(objId);
		if (opacity <= 100) {
			setOpacity(obj, opacity);
			opacity += 100/incrTrs;
			window.setTimeout("fadeIn('"+objId+"','"+divId+"',"+opacity+")", tempoTrs);
		} else {
			document.getElementById( divId ).style.backgroundImage = "url( " + obj.src + " )";
			setTimeout( "changeImage( '" + objId + "', '" + divId + "' )", tempo );
		}
	}
}