'menumainmenu' is undefined

Poster: d
Dated: Monday August 26 2002 - 22:00:47 BST

I downloaded mmenu.js and menu_array.js for the static popup menu.
I inserted the following into the body of my html:
(in addition to the copyright notice, of course)

<SCRIPT language=JavaScript src="mmenu.js" type=text/javascript></SCRIPT>
<SCRIPT language=JavaScript src="menu_array.js" type=text/javascript></SCRIPT>

...

<a href="yourlink.html" onmouseover=popup("mainmenu") onmouseout=popdn()><font color="#008000">MAIN MENU</font></a>

but I get the following error: 'menumainmenu' is undefined

Can anyone help ?

Thank you!
danielle