1) Script Title: ddlevelsmenu

2) Script URL (on DD):
http://www.dynamicdrive.com/dynamici...menu/index.htm

3) Describe problem:
Hovering on an option with submenu options renders a grey layer all over the browser window. Only the row with that option and their submenu options are visible, the rest of the page gets covered with that layer. This ONLY experienced with Firefox 3.5 (NOT happening with Chrome 2.0, IE8, Safari 4.0 or Opera 10).

Test page: http://www.dynamicdrive.com/dynamici...menu/index.htm

Thanks in advance for any workaround.