$(function() {		
// initialize overlay trigger
$("div.overlaybutton").overlay({expose: '#000'});
});

$(function() {

	// if the function argument is given to overlay, it is assumed to be the onBeforeLoad event listener
	$("a[rel]").overlay(function() {

		// grab wrapper element inside content
		var wrap = this.getContent().find("div.wrap");

		// load only for the first time it is opened
		if (wrap.is(":empty")) {
			wrap.load(this.getTrigger().attr("href"));
		}
	});
});