the element should be passed as an argument to the callback function

Created by: nticaric

When the content is fetched via a callback function ,the current element should be passed as an argument. ie. if the following behavior is wanted:

    //the content should be the href attribute of the currnet element
$(function(){
    var options = {};
    options.title = "Some title";
    options.content = function(el) {
        return $(el).attr("href");
    }
    $('a').popover(options)
})