/* PROMO ADVERT EFFECTS */
/* dependent on moo.fx 2 */


function promo_reveal(id,dn) {
	var id1 = id + 'a';
	var id2 = id + 'b';
	
	// IF the browser is IE pre IE7, just show/hide the mask layer
	if (document.all && !window.XMLHttpRequest) {
	
		function getObj(name) {
			if (document.getElementById)
			{
				this.obj = document.getElementById(name);
				this.style = document.getElementById(name).style;
			}
			else if (document.all)
			{
				this.obj = document.all[name];
				this.style = document.all[name].style;
			}
			else if (document.layers)
			{
				this.obj = document.layers[name];
				this.style = document.layers[name];
			}
		}
	
		var s = new getObj(id1);
		
		if (dn=='hide') {
			s.style.display = 'none';
		} else if (dn=='show') {
			s.style.display = 'block';
		}
		
	} else {
	
		// everyone else gets the two layer slide
		var myMask1 = new Fx.Style(id1, 'height', {duration: 500});
		var myMask2 = new Fx.Style(id2, 'height', {duration: 900});
		if (dn=='hide') {
			myMask1.custom(240,24);
			myMask2.custom(240,0);
		} else if (dn=='show') {
			myMask1.custom(24,240);
			myMask2.custom(0,240);
		}
	
	}

}