how to force culture_key variable to url on

	<?php
			if($modx->context->get('key') != "mgr"){
				/* grab the current langauge from the cultureKey request var */
				switch ($_REQUEST['cultureKey']) {
					case 'nl':
						/* switch the context */
						$modx->switchContext('Nederlands');
						break;
					case 'de':
						/* switch the context */
						$modx->switchContext('Deutsch');
						break;
					default:
						/* Set the default context here */
						$modx->switchContext('web');
						break;
				}
				/* unset GET var to avoid
				 * appending cultureKey=xy to URLs by other components */
				unset($_GET['cultureKey']);
			}