Provides automatic modal support for any hook_menu() paths that have 'modal' => TRUE defined. This makes it easy to add optional modal support in any contrib module and helps reduce the burden on module developers to support modals.
Usage
function mymodule_menu() {
$items['mymodule/form'] = array(
'page callback' => 'drupal_get_form',
'page arguments' => array('mymodule_form'),
'access arguments' => array('administer mymodule'),
'modal' => TRUE, // This line is where the magic happens.
);
}