In the cloze/embedded/multianswer question type in Quiz, feedback is shown upon mouse-hovering over the student's answers.

This popup window is triggered by the liboverlib.js library.

A display bug occurs in MSIE (not in Firefox) if that popup window happens to be displayed OVER another sub-question in the cloze question, i.e. over a form (drop-down box, etc.).

The creator of overlib.js offers a plug-in library to solve this bug. Tried and tested (see enclosed screen dump).

May I suggest that from now on Moodle stable distributions should include the following modifications.

1- add liboverlibmws_iframe.js (download complete archive from http://www.macridesweb.com/oltest/overlibmws.zip)

2- in libjavascript.php, towards line 20, add:

<script language=JavaScript type=text/javascript src=<?php echo $CFG->httpswwwroot ?>/lib/overlibmws_iframe.js></script>

NOTE.- The liboverlib.js library presently distributed with Moodle was last revised January 12, 2005. A newer revision dated June 30, 2006 is available from http://www.macridesweb.com/oltest/overlibmws.zip, under a different name: overlibmws.js.

I recommend that this newer version be distributed with Moodle (under the name of overlib.js so as not to entail further modification of libjavascript.php).

Joseph