var banner_order;// = new Array(1,2,3,4,5);

function swapBanner()
{
	// move top to bottom
	var top_banner = banner_order.shift();
	banner_order.push(top_banner);
	//alert(printOrder());
	for (itr=0; itr<banner_order.length; itr++)
		document.getElementById("fancy-bg-"+banner_order[itr]).style.zIndex = -1-itr;
		
	// make 'on deck' banner visibile
	new Effect.Opacity("fancy-bg-"+banner_order[1], { duration:0.001, from: 0, to: 1 });
	
	// make new top fade 
	new Effect.Opacity("fancy-bg-"+banner_order[0], { duration:2.0, from: 1, to: 0 });
}

function initSwapBanner(arg)
{
	banner_order = arg;
}
setInterval("swapBanner()", 6000);

function printOrder()
{
	var str = '';
	for (itr=0; itr<banner_order.length; itr++)
	{
		str += banner_order[itr] + " ";
	}
	return str;
}