/*	
 *	Converts a string to a suitable html ID attribute.
 *	
 *	 http://www.w3.org/TR/html4/struct/global.html#h-7.5.2 specifies what makes a
 *	 valid ID attribute in HTML. This function:
 *	
 *	- Ensure an ID starts with an alpha character by optionally adding an 'n'.
 *	- Replaces any character except A-Z, numbers, and underscores with dashes.
 *	- Converts entire string to lowercase.
 *	
 *	@param $string
 *	  The string
 *	@return
 *	  The converted string
 */	

function idealform01_id_safe($string) {
  // Replace with dashes anything that isn't A-Z, numbers, dashes, or underscores.
  $string = strtolower(preg_replace('/[^a-zA-Z0-9_-]+/', '-', $string));
  // If the first character is not a-z, add 'n' in front.
  if (!ctype_lower($string{0})) { // Don't use ctype_alpha since its locale aware.
    $string = 'id'. $string;
  }
  return $string;
}

function idealform01_preprocess_user_profile_item(&$vars) {
  //dpm($vars);
  if(!empty($vars['element']['#attributes']['class'])) {
    $vars['element']['#attributes']['class'] .= ' ';
  }
  $vars['element']['#attributes']['class'] .= 'user-profile-item';
  $vars['attributes'] = drupal_attributes($vars['element']['#attributes']);
}

function idealform01_preprocess_user_profile_category(&$vars) {
  //dpm($vars);
  if(!empty($vars['element']['#attributes']['class'])) {
    $vars['element']['#attributes']['class'] .= ' ';
  }
  $vars['element']['#attributes']['class'] .= 'user-profile-category user-profile-category-' . idealform01_id_safe($vars['title']);
  $vars['attributes'] = drupal_attributes($vars['element']['#attributes']);
}