Event.observe(window, 'load', function(){
    var sliderLink = $('showPhotoForm');
    if(sliderLink == null)return;
    Event.observe(sliderLink, 'click', function(){
        if($('galleryAddPhoto').style.display == 'none') {
            $('galleryAddPhoto').show();
        } else {
            $('galleryAddPhoto').hide();
        }
    });
})