jQuery.fn.rollover = function( rollover_src ) {
  if($(this).attr('src') == rollover_src) return this;
  $(this).hover(function() {
    $(this).data('orig-src', $(this).attr('src'));
    $(this).attr('src', rollover_src);
  }, function() {
    $(this).attr('src', $(this).data('orig-src'));
  });
  return this;
};

function transitionHeaderImage() {
  if($('#header-images').data('animating')) { return false; }
  
  activeImage = $('img.header-image.active');
  nextImage = activeImage.next('img.header-image');
  if(nextImage.length == 0) {
    nextImage = $('#header-images img.header-image:first');
  }

  if(nextImage != activeImage) {
    nextImage.css('z-index', activeImage.css('z-index') - 1);
    $('#header-images').data('animating', true);
    activeImage.animate({'opacity':'0.0'}, 
                        {duration: 1000,
                         complete: function() {
                                     activeImage.removeClass('active');
                                     nextImage.addClass('active');
                                     nextImage.css('z-index', null);
                                     activeImage.css('opacity', null);
                                     $('#header-images').data('animating', false);
                                   }});
    return true;
  } else {
    return false;
  }
};

$(document).ready(function() {
  $('#nav-home img').rollover('http://c0194981.cdn.cloudfiles.rackspacecloud.com/eventcenterdowntown/assets/31/original.gif');
  $('#nav-amenities img').rollover('http://c0194981.cdn.cloudfiles.rackspacecloud.com/eventcenterdowntown/assets/27/original.gif');
  $('#nav-sponsors img').rollover('http://c0194981.cdn.cloudfiles.rackspacecloud.com/eventcenterdowntown/assets/35/original.gif');
  $('#nav-photo-gallery img').rollover('http://c0194981.cdn.cloudfiles.rackspacecloud.com/eventcenterdowntown/assets/33/original.gif');
  $('#nav-contact img').rollover('http://c0194981.cdn.cloudfiles.rackspacecloud.com/eventcenterdowntown/assets/29/original.gif');

  $('a.lightbox').lightBox({ fixedNavigation: true });
  $('a#reload-recaptcha').click(function(event) {
    event.preventDefault();
    Recaptcha.reload();
  });
  
  setInterval('transitionHeaderImage()', 10000);
  $('img.header-image').click(transitionHeaderImage);
});