$(document).ready(function(){

    $('.th_gallery_unstyled').addClass('th_gallery'); // adds new class name to maintain degradability

    $('ul.th_gallery').galleria({
        history   : true, // activates the history object for bookmarking, back-button etc.
        clickNext : true, // helper for making the image clickable
        insert    : '#main_image', // the containing selector for our main image
        onImage   : function(image,caption,thumb) { // let's add some image effects for demonstration purposes

            // fade in the image & caption
            if(! ($.browser.mozilla && navigator.appVersion.indexOf("Win")!=-1) ) { // FF/Win fades large images terribly slow
                image.css('display','none').fadeIn(1000);
            }
            caption.css('display','none').fadeIn(1000);

            // fetch the thumbnail container
            var _li = thumb.parents('li');

            // fade out inactive thumbnail
            _li.siblings().children('img.selected').fadeTo(500,0.3);

            // fade in active thumbnail
            thumb.fadeTo('fast',1).addClass('selected');

            // add a title for the clickable image
            image.attr('title','Next image >>');
        },
        onThumb : function(thumb) { // thumbnail effects goes here

            // fetch the thumbnail container
            var _li = thumb.parents('li');

            // if thumbnail is active, fade all the way.
            var _fadeTo = _li.is('.active') ? '1' : '0.3';

            // fade in the thumbnail when finnished loading
            thumb.css({display:'none',opacity:_fadeTo}).fadeIn(1500);

            // hover effects
            thumb.hover(
                function() { thumb.fadeTo('fast',1); },
                function() { _li.not('.active').children('img').fadeTo('fast',0.3); } // don't fade out if the parent is active
            )
        }
    });
});