Index: Classes/ViewHelpers/TranslateViewHelper.php
===================================================================
--- Classes/ViewHelpers/TranslateViewHelper.php	(revision 3973)
+++ Classes/ViewHelpers/TranslateViewHelper.php	(working copy)
@@ -58,13 +58,14 @@
 	 * @param string $default if the given locallang key could not be found, this value is used. . If this argument is not set, child nodes will be used to render the default
 	 * @param boolean $htmlEscape TRUE if the result should be htmlescaped. This won't have an effect for the default value
 	 * @param array $arguments Arguments to be replaced in the resulting string
+	 * @param string $extensionName Key of the extension
 	 * @return string The translated key or tag body if key doesn't exist
 	 * @author Christopher Hlubek <hlubek@networkteam.com>
 	 * @author Bastian Waidelich <bastian@typo3.org>
 	 */
-	public function render($key, $default = NULL, $htmlEscape = TRUE, array $arguments = NULL) {
+	public function render($key, $default = NULL, $htmlEscape = TRUE, array $arguments = NULL, $extensionName = NULL) {
 		$request = $this->controllerContext->getRequest();
-		$extensionName = $request->getControllerExtensionName();
+		$extensionName = (is_null($extensionName) ? $request->getControllerExtensionName() : $extensionName);
 		$value = Tx_Extbase_Utility_Localization::translate($key, $extensionName, $arguments);
 		if ($value === NULL) {
 			$value = $default !== NULL ? $default : $this->renderChildren();