Bug 99501: JS error in viewZoomOverlay.js at startup. r=sfraser, sr=hewitt

suite/browser/navigator.js

@@ -1165,8 +1165,8 @@ function hiddenWindowStartup()
   // Disable menus which are not appropriate
   var disabledItems = ['cmd_close', 'Browser:SendPage', 'Browser:EditPage', 'Browser:PrintSetup', /*'Browser:PrintPreview',*/
                        'Browser:Print', 'canGoBack', 'canGoForward', 'Browser:Home', 'Browser:AddBookmark', 'cmd_undo',
-                       'cmd_redo', 'cmd_cut', 'cmd_copy','cmd_paste', 'cmd_delete', 'cmd_selectAll'];
-  for (id in disabledItems) {
+                       'cmd_redo', 'cmd_cut', 'cmd_copy','cmd_paste', 'cmd_delete', 'cmd_selectAll', 'menu_textZoom'];
+  for (var id in disabledItems) {
     var broadcaster = document.getElementById(disabledItems[id]);
     if (broadcaster)
       broadcaster.setAttribute("disabled", "true");