$(document).ready(function(){
  $('.gallery_demo_unstyled').addClass('gallery_main'); // adds new class name to maintain degradability
  $('ul.gallery_main').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
	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
	)
     }
  });
});