/*
Enertia Solutions
where 'header_selector' has position absolute
*/
var header_selector = 'ul#scroll_pics li';
var headers = new Array();
var current_header=0;
var header_timeout = null;
var startScrollingHeader = function() {
	headers = $$(header_selector);
	//init by hiding the headers
	headers.each(function(h, i) {
		if(i != current_header) {
			h.setStyle({ opacity: 0.0 });
		}
	});
	if (headers.length > 1) {
		scrollingHeader();
	}
}
var scrollingHeader = function() {
	header_timeout = setTimeout("nextHeaderItem();", 6000);
}
function nextHeaderItem() {
	var old_header = current_header;
	if (++current_header > (headers.length - 1)) {
		current_header = 0;
	}
	headers.each(function(h) {
		h.setStyle({ zIndex: "1" });
	});
	headers[current_header].setStyle({ zIndex: "2" });
	new Effect.Opacity(headers[current_header], { from: 0.0, to: 1.0, duration: 0.5, queue: 'end' });
	new Effect.Opacity(headers[old_header], {from: 1.0, to: 0.0, duration: .25, queue: 'end' });
	scrollingHeader();
}
Event.observe(window, 'load', startScrollingHeader);