function get_photo(photo_url, photo_id) {
  var data = "photo_url="+photo_url+"&photo_id="+photo_id;
  var div = 'big_photo';
  var req = new Request.HTML({  
                     method: 'post',  
                     url: '/scripts/media/contest/get_photo.php',
                     update: div,
                     onRequest: function() { 
                        $(div).set('html', '<div style="padding:224px 304px;"><img src="/css_media/img/ajax-loader.gif" /></div>'); 
                     },
                     data: data
                 }).send();
}

function set_rating(photo_id, rate) {
var data = "photo_id="+photo_id+"&rate="+rate;
var div = 'ajaxvote';
var req = new Request.HTML({  
                     method: 'post',  
                     url: '/scripts/media/contest/set_rating.php',
                     update: div,
                     onRequest: function() { 
                        $(div).set('html', '<img src="/css_media/img/ajax-loader.gif" />'); 
                     },
                     data: data
                 }).send();
}