function initLightbox() {
    $('.pm-body-prod-mood-img-big div.a').each(function(index) {
    	 $(this).wrap($('<div></div>').attr({'id' : 'img'+index, 'class' : 'img-overlay'}));
    });
   	$('.pm-body-prod-mood-img img').each(function(index) {
        $(this).attr({'rel' : '#img'+index})
   	});
    $("img[rel]").overlay({
   	    mask: {
       	    color: '#000',
           	loadSpeed: 200,
            opacity: 0.3
   	    }
	});
}

$(function() {
	e = document.getElementById('img0');
	if (e == null) {
		initLightbox();
	}
});