document.observe("dom:loaded", function() {
  $$('a.service').each(function(elt, index) {
    elt.observe('click', function(event) {
      Effect.toggle(this.up().next().next().select('.explain').first(), 'blind', { duration: 0.5 })
      event.stop();
    });
  });
  
  $$('.explain').each(function(elt, index) {
    elt.hide();
  });
});