$(function() { 
    $("a[rel]").overlay( {
		start:  { top: 0, left: 0, width: 0, absolute: false },
		finish: { top: 50, left: 'center', absolute: false },
		expose: { color: '#7c1e47', opacity: 0.5, closeSpeed: 500 },
	 	onLoad: function() { 
        	var wrap = this.getContent().find("div.wrap"); 
        	if (wrap.is(":empty")) { 
            	wrap.load(this.getTrigger().attr("href")); 
        	}
		}
    }); 
});