do you know any thing about design patterns in web design  

I also don't have more information about design pattern... but i think a design pattern is a thing on which you can design your website or any other web application.. suppose you have seen any website on internet..and you like this website designing..so now you may want to design your website as you seen this on internet.. so i think you may follow this website patterns.. or architecture..
have a nice day and keep mylotting always..

here is a little info about design pattern:

Design Pattern:

-A general reusable solution to a commonly occurring problem in web development.
-It is not finished design that can be transformed directly into code.
-It is a template for how to solve a problem that can be used.
-Is reside in the domain of modules and interconnections.

why using Design Pattern?

IT ease the web development and programming with design you have a base pattern to follow and to customize.
Here are sample of Design Pattern site

_http://developer.yahoo.com/ypatterns/

I hope this info will help you by the way the code are opensource so enjoy coding.