$(document).ready(
    function()
    {
        $(".ngg-gallery-thumbnail-box a").attr('rel','group1');
        
	    /* Apply fancybox to multiple items */
	
	    $(".ngg-gallery-thumbnail-box a").fancybox(
            {
		        'transitionIn'	:	'elastic',
		        'transitionOut'	:	'elastic',
		        'speedIn'		:	600, 
		        'speedOut'		:	200, 
		        'overlayShow'	:	true,
                'overlayOpacity':   '0.9',
                'overlayColor'  :   '#000'
	        }
        );
	
    }
);