Loading Frames from Select

[richm@ppsi.com]

I've only been working with JavaScript for about a week, so please bear 
with me if this problem seems elementary.

I have a pretty simple window with 2 frames - one has a form with a SELECT 
tag.  Based on the user input from that select tag, I would like to load 
different HTML pages into the other frame.

The problem I'm having is the syntax to get the user's choice from the 
select box.  The documentation says to use something like 
selectName.selectedIndex where selectName is the NAME= of the SELECT tag.  
JavaScript, however, is complaining that "selectName" is not defined (even 
though it is).

Thanks in advance;
Michael (richm@ppsi.com)