by Davo Smith.
$jsmodule = array(
'name' => 'block_bcgt',
'fullpath' => new moodle_url('/blocks/bcgt/js/block_bcgt.js'),
'requires' => array('node', 'event', 'panel', 'json'), // YUI3 modules to include
);
$opts = array('name' => 'value'); // Params to pass to the init function
$PAGE->requires->js_init_call('M.block_bcgt.init', array($opts), true, $jsmodule);