var current_image = 0;
	function nextImage ()
	{
		var next = current_image+1;
		var c = 4;
		
		if(next > (c-1))
		{
			changer(0);
		}
		else
		{
			changer(next);
		}
	}
	
	function changer (num)
	{
		clearTimeout(timeoutId);
		timeoutId = setTimeout("nextImage()", 8200);
		current_image = num;
		
		images = new Array();
		urls = new Array();
		count = 3;
		images[0] = "/images/struttura/immagini/banner0.jpg";
		urls[0] = "#";
		document.getElementById("banner0").src = "/images/struttura/button_clear.png";
		
		images[1] = "/images/struttura/immagini/banner1.jpg";
		urls[1] = "#";
		document.getElementById("banner1").src = "/images/struttura/button_clear.png";
		
		images[2] = "/images/struttura/immagini/banner2.jpg";
		urls[2] = "#";
		document.getElementById("banner2").src = "/images/struttura/button_clear.png";
		
		images[3] = "/images/struttura/immagini/banner3.jpg";
		urls[3] = "#";
		document.getElementById("banner3").src = "/images/struttura/button_clear.png";
				
		
		var d = document.getElementById("main_banner");
		document.getElementById("frontpage_banner").href = urls[num];
		document.getElementById("banner" + num).src = "/images/struttura/button_white.png";
		document.getElementById("banner" + num).onmouseout = "this.src='/images/struttura/button_white.png'";
		d.src = images[num];
	}
	
	var timeoutId = setTimeout("nextImage()",5000);