//promo
var openPromo = "mainpromo";

function showPromo(promoToShow)
{
	hideLayer(openPromo);
	showLayer(promoToShow);
	openPromo = promoToShow;
}

function showLayer(id) 
{
	var div = returnDiv(id);
	div.visibility = "visible";
}

function hideLayer(id) 
{
        var div = returnDiv(id);
        div.visibility = "hidden";
//		previousLayer = "";
}

function returnDiv(id) {
	if (document.all) // IE
	{
		var div = document.all(id).style;
	}
	else if (document.layers) // NS4
	{
		var div = document.layers[id];
	}
	else if (document.getElementById) // NS6
	{
		var div = document.getElementById(id).style;
	}
	return div;
}

function simpleArray() {
        this.length = 0;
        this.active = '';
}