a more dynamic and userfriendly menu
It should be noted that those two things don't necessarily combine well all the time...
I haven't got a chance to look at the Bradford page, but any menu should reflect the structure of the information presented in a way most visitors would expect. It's this last aspect that's often hardest to achieve.
Altough there's a lot of talk about menus lately -some voices declare them next to useless altogether, a visitor should be able to find what he/she is looking for in as few clicks as possible, and every click that is required needs to clearly lead towards the desired end result.
If there are multiple levels recognisable in the menu structure, a dynamic / drop-down style menu is one option; they don't work well for all people, though. Another approach, in line with the click-towards-the-goal idea, would be to refine the menu options from broad to specific in subsequent levels, and only show the items for that level, and the parent item -although research has shown that many visitors mainly use the "Back" button to navigate back up the structure.
A peek at the intended menu structure could help to say anything more conclusive; if you already decided for a dynamic menu system, do a search for "drop down menu" as this is what they're commonly known as.