Ajax, php, jQuery menu

Hello all I'm looking for a talented PHP programmer, who also has sound knowledge of mySQL, Sphinx (debating if we should use it), JavaScript, jQuery. The project detail are as follows: Want I need is a menu controlled by Ajax, The first section of the menu will be displayed, when a user selects a item in the menu this will display a second menu, If the user selects an item in the second menu a third will be displayed, This will continue to grow until the user selects the last of the child in the chosen category. Once the final selection has been made a "submit button" and an "add second category button" will appear. Before submitting their chosen category the user will have the option to add a second category. Design layout, the menu will be in uniformed boxes (height and width) there will be a loading icon to inform the user that the menu is loading will need to be css controlled will need to be in xhtml strict additional this will be displayed in a modal window, so you will need to create a very basic parent page (just a link to open the modal window) for the data just add dummy information for now... upto five category deep ( one parent category, and 4 child) this will also need to be varied (such as two categories deep) so we can see how it reacts. I know I shouldn't have to say this, but it should be xcross browser, xplatform and xdevice compatible. As a side NOTE The menu will need to be multiply selection (no holding down the ctrl to make selections) and they user will need to be able to deselect or delete their selection if they make mistake It will need to show the user selection as they are choosing (you can see this in the example) and would it be possible for you to create the demo so the boxes are visible all time, and one where they appear with each child menus. Any questions please ask a way.