Event.observe(window, 'load', init, false);

function init() {
  Event.observe('SentAwardAnonymous','click', toggle_from, false);
}

function toggle_from() {
  if ($('SentAwardAnonymous').checked) {
    $('SentAwardSenderEmail').disabled=true;
    $('SentAwardSenderName').disabled=true;
    $('SentAwardSenderUrl').disabled=true;    
  } else {
    $('SentAwardSenderEmail').disabled=false;
    $('SentAwardSenderName').disabled=false;
    $('SentAwardSenderUrl').disabled=false;
  } 
}

function award_preview(key) {
  $('award_img').src= '/bb/img/default/loading.gif';
  $('award_preview').style.display='block';
  selected_value = $('SentAwardAwardId')[key].value;
  key_values = selected_value.split('_');
  $('award_img').src= '/bb/img/awards/award_images/award_' + key_values[1] + '.jpg';
}