more CSS help

[howdydoody]

Hi all,

I am trying to create my own template for ZenCart, however, knowing very little PHP, and still learning CSS its proving difficult.

Here is the site:

http://www.thestoolie.co.uk/framemill/index.php

I am trying to get a similar layout to www.cowgirlcookieco.com.

Please excuse the super silly colour schemes, its just an easy way of learning where each of the DIVs are in relation to each other.

I am having to splice the standard CSS & PHP with the CSS of the above site and then modify it to make it work.

It works better in Firefox than IE at the moment.

What I need is for the div #nav_menu (green div) to be placed at the bottom of the blue div and above the white div.

Any suggestions?

I need to get the layout correct before I can start adding content and images etc.

EDIT: Also, any idea how to make the SEARCH button a few pixels longer in order to fit the word in completely?