--- modules/locale/locale.module.orig	2009-07-15 11:59:35.000000000 +0200
+++ modules/locale/locale.module	2009-07-15 12:13:46.000000000 +0200
@@ -301,6 +301,8 @@
   );
 }
 
+
+
 // ---------------------------------------------------------------------------------
 // Locale core functionality
 
@@ -476,6 +478,20 @@
   }
 }
 
+ /**
+ * Implementation of hook_file_download().
+ *
+ * Ensure that translation JS are always downloadable.
+ */
+function locale_file_download($file) {
+  $path = file_create_url(variable_get('locale_js_directory', 'languages'));
+
+  if (strpos(file_create_url($file), $path) === 0) {
+    return array('Content-type: application/x-javascript');
+  }
+}
+
+
 /**
  * Update JavaScript translation file, if required, and add it to the page.
  *
@@ -487,7 +503,9 @@
 function locale_update_js_files() {
   global $language;
 
-  $dir = file_create_path(variable_get('locale_js_directory', 'languages'));
+  $dir = file_create_url(file_create_path(variable_get('locale_js_directory',
+                                                      'languages')));
+  $dir = substr($dir, strlen($GLOBALS['base_url']) + 1);
   $parsed = variable_get('javascript_parsed', array());
 
   // The first three parameters are NULL in order to get an array with all
@@ -585,3 +603,5 @@
     return $block;
   }
 }
+
+