public function getContinent($option = null)
{
$obj = new Application_Model_Continent();
$entries = $obj->fetchAll(null, 'name asc');
$arrContinent = array();
if (!is_null($option)) {
$arrContinent[''] = $option;
}
foreach ($entries as $entry) {
$arrContinent[$entry->getId()] = $entry->getName();
}
return $arrContinent;
}