$(document).ready(
    function()
    {
        $().piroBox({
            my_speed: 300, //animation speed
            bg_alpha: 0.5, //background opacity
            radius: 4, //caption rounded corner
            scrollImage : false, // true == image follows the page _|_ false == image remains in the same open position
            // in some cases of very large images or long description could be useful.
            slideShow : 'true', // true == slideshow on, false == slideshow off
            slideSpeed : 3, //slideshow
            pirobox_next : 'piro_next', // Nav buttons -> piro_next == inside piroBox , piro_next_out == outside piroBox
            pirobox_prev : 'piro_prev', // Nav buttons -> piro_prev == inside piroBox , piro_prev_out == outside piroBox
            close_all : '.piro_close' // add class .piro_overlay(with comma)if you want overlay click close piroBox
        });
    });