function get_form_option_value(field) 
{
  var field_value = field.options[field.selectedIndex].value
  if (field_value.substring(2,0) == '3;') {
    e = document.getElementById('x-item-gender-row');
    e.className='visible';
  } else {
    e = document.getElementById('x-item-gender-row');
    e.className='hidden';
  }
}
/*
function swap_item_image(target_el, url) {
  e = document.getElementById(target_el);
  e.style.background='url("' + url + '") center center no-repeat';
}
*/
function swap_item_image(target_el, url) {
  e = document.getElementById(target_el);
  e.src = url;
}