function a(i){
		if (i>=images_left.length) i=0;
		if (i>=images_right.length) i=0;
		document.getElementById('image2_left').style.zIndex="2";
		document.getElementById('image2_right').style.zIndex="2";
		fadeIn('image2_left', 0);
		fadeIn('image2_right', 0);
		document.getElementById('image2_left').style.background="transparent url("+imgdir+images_left[i]+") no-repeat";
		document.getElementById('image2_right').style.background="transparent url("+imgdir+images_right[i]+") no-repeat";
		document.getElementById('image_left').style.zIndex="1";
		document.getElementById('image_right').style.zIndex="1";
		i++;
		var recur_call = "b("+i+")";
		setTimeout(recur_call, 5000);
	}
	function b(i){
		if (i>=images_left.length) i=0;
		if (i>=images_right.length) i=0;
		document.getElementById('image_left').style.zIndex="2";
		document.getElementById('image_right').style.zIndex="2";
		fadeIn('image_left', 0);
		fadeIn('image_right', 0);
		document.getElementById('image_left').style.background="transparent url("+imgdir+images_left[i]+") no-repeat";
		document.getElementById('image_right').style.background="transparent url("+imgdir+images_right[i]+") no-repeat";
		document.getElementById('image2_left').style.zIndex="1";
		document.getElementById('image2_right').style.zIndex="1";
		i++;
		var recur_call = "a("+i+")";
		setTimeout(recur_call, 3000);
	}
	function fadeIn(objId, opacity) {
		if (document.getElementById){
			obj = document.getElementById(objId);
			if (opacity <= 100) {
				setOpacity(obj, opacity);
				opacity += 5;
				window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 100);
			}
		}
	}
	function setOpacity(obj, opacity) {
		opacity = (opacity == 100)?99.999:opacity;
		// IE/Win
		obj.style.filter = "alpha(opacity:"+opacity+")";
		// Safari<1.2, Konqueror
		obj.style.KHTMLOpacity = opacity/100;
		// Older Mozilla and Firefox
		obj.style.MozOpacity = opacity/100;
		// Safari 1.2, newer Firefox and Mozilla, CSS3
		obj.style.opacity = opacity/100;
	}