$(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 

            wrap.load(this.getTrigger().attr("href")); 

    }); 
});