$(document).ready(function() {
    $(".give-feedback").click(function(event) {
        event.preventDefault();
        var url = $(this).attr("href"),
            message = "<iframe class='overlay-iframe' src='"+url+"' height='425px' width='99%' border='0' frameborder='no' marginWidth='1' marginHeight='1'></iframe>";

        NAP.overlayPanel({
            title: "Your Feedback",
            width: 435, 
            theme: "dark",
            message: message
        });
    });
});