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()", 12000);
	current_image = num;
	
	banner = new Array();
	produkt = new Array();
	count = 4;
	banner[0] = "images/banners/1.jpg";
	document.getElementById("button_img0").src = "images/button.png";
	
	banner[1] = "images/banners/2.jpg";
	document.getElementById("button_img1").src = "images/button.png";
	
	banner[2] = "images/banners/3.jpg";
	document.getElementById("button_img2").src = "images/button.png";
	
	banner[3] = "images/banners/5.jpg";
	document.getElementById("button_img3").src = "images/button.png";
	
				
	var d = document.getElementById("main_img");
	document.getElementById("button_url").href = produkt[num];
	document.getElementById("button_img" + num).src = "images/button_active.png";
	document.getElementById("button_img" + num).onmouseout = "this.src='images/button_active.png'";
	d.src = banner[num];
}
var timeoutId = setTimeout("nextImage()", 7000);