function randomFromTo(from, to){
   return Math.floor(Math.random() * (to - from + 1) + from);
}

$(document).ready(function() {
    $("a.item-fb").fancybox({
        'titlePosition' : 'inside',
        'overlayColor'  : '#000',
        'overlayOpacity': 0.9,
        'transitionIn'	:	'elastic',
		'transitionOut'	:	'elastic'
    });

    $('.context-menu-item').each(function(){
       $(this).mouseenter(function(){
          var rel = $(this).attr('rel');
          var item_content = $('.' + rel + '-op');
          item_content.addClass('opacity-full');
       });

       $(this).mouseleave(function(){
          var rel = $(this).attr('rel');
          var item_content = $('.' + rel + '-op');
          item_content.removeClass('opacity-full');
       });
    });

    $(".photo-image").click(function(){
       history.back();
    });

    var url = "url('http://alnea.sk/images/bg"+randomFromTo(1,3)+".jpg')";
    $('#container').css('background-image', url);
});