drop down menu help please

[josh999]

Hi all.
I have some drop down menus on a web page. I have added code that i got from a code generator as new to all this but it doesnt work just wondering if you can please take a look and help fix it

code is in the header

web site is www.fishnfeatherpets.com.au

the drop downs are the 8 category drop downs on the home page.

Thanks heaps in advance