Ajax, Nested Fieldsets,

Hello, I'm new to this site & hope this turns out to be a good experience. I do have a form with nested fieldsets, I want my visitors to be able to add (without reload) a new fieldset then when type in one of the fields they get a dropdown for suggestions & if they choose one of the suggestions, it should populate the other fields in the fieldset. As said there are multiple & nested fieldsets. The number of fieldsets that the visitor can add should not be limited, although 10 will be the max # they would use. The HTML (Fieldseets/Fields using tables) of the page, with some working ajax is ready. I want someone to finalize the page, make the php loops to process the data to a mysql DB. looking forward to hear from you.