Is there any law that says I cannot wrap the larger part of a web page INSIDE an HTML Form??

I am building a page where Users can check their Messages, and currently I just have my Inbox - which is an HTML Table - inside my Form. Doing so allows me to have Submit Buttons and to use the $_POST array in PHP.

Everything is working fine, except that now I would like to add a side bar with the following links: Inbox, Sent, Deleted, etc. (Basically I'm trying to mimic how my Yahoo Mail account looks.)

This side bar - with the above mentioned links - will likely have some "Form-like" properties (e.g. containing a "Check Mail" and "Create PM" buttons), so it would make sense to include it in my existing Form. (Unless I create a second Form, but that seems inefficient.)

So, is what I am describing legit?!

Sincerely,


Debbie