var validationSet = {
  'firstname': {
    'regexp': /^[^!\%@\(\)#$\*\&\^_\\\/><~:;\[\]\{\}]+$/,
    'error': 'This firstname is invalid. ' +
        'You can not type any symbol here.'
  },
  'lastname': {
    'regexp': /^[^!\%@\(\)#$\*\&\^_\\\/><~:;\[\]\{\}]+$/,
    'error': 'This lastname is invalid. ' +
        'You can not type any symbol here.'
  },
  'email': {
    'regexp': /^.+?@.+?\..+$/,
    'error': 'This email address is invalid. ' +
        'It should be of the form someone@example.com.'
  },
  'phone': {
    'regexp': /^[- ()#0-9]+$/,
    'error': 'A phone number must be digits only.'
  },
  'fax': {
    'regexp': /^[- ()0-9]+$/,
    'error': 'A fax must be digits only.'
  },
  'websiteurl': {
    'regexp': /^.+?\..+?\..+$/,
    'error': 'This website url is invalid.' +
        'It should be of the form example.example.example... .'
  }
};