function toggleBenefit(id) {
  $('benefits'+id).style.display = ($('benefits'+id).style.display == 'none') ? 'block' : 'none';
}

// Define Behavior rules
var myrules = {
  '#career h3 a' : function(el) {
    el.onclick = function() {
      toggleBenefit(el.id);
      return false;
    }
  }
};
Behaviour.register(myrules);

/*Event.observe(window, 'load', init, false);
function init() {
  totalBenefits = 8;
  for(i=1; i<=totalBenefits; i++) {
    $('benefits'+i).style.display = 'none';
  }
}*/