Code a simple autocomplete and drop down menu (denn)

We have an existing PHP site with a MySQL database. The site is brand new so the files you'll be working on have not been coded at all yet. The job involves creating two drop down menus, both with just simple links in them. Also to code an autocomplete which I have provided a link to the script for. Please read through the attached document for full details and instructions, and feel free to ask any questions. You will be given full ftp and Cpanel access.