How to change in After The Deadline the onClick event to onMouseOver?

Hello,

I would like After the Deadline to react onMouseOver instead of onClick when I click on a highlighted error in the text.

I suspect this line in line 177 of editor_plugin.js is responsible
editor.onClick.add(plugin._showMenu, plugin);

When I change this to onMouseOver it complains that there is no such event in TinyMce. How to proceed?

Here is an atd demo:
http://www.polishmywriting.com/atd-tinymce/demo.html

http://wordpress.org/extend/plugins/jetpack/