// Only tested in firefox
function hideErrorBox () {
  $('errorBox').hide();
  $('errorOverlay').hide();
  selectField(); // defined in field_selector.js
  Event.stopObserving(document, 'mousedown', hideErrorBox);
  Event.stopObserving(document, 'keypress', hideErrorBox);
}

document.observe('dom:loaded', function () {
  Event.observe(document, 'mousedown', hideErrorBox);
  Event.observe(document, 'keypress', hideErrorBox);
});