Minor Jquery Wordpress form manipulation

Avg Bid (NZD)
Project Budget (NZD)
$14 - $30

Project Description:
I need an expert and someone who knows what they're doing will be able to do this very quickly.
I have a word press job-board theme and I need the job category put into the title automatically when the job form is submitted.
For example the user might type in "Experience software developer" as the title for the job in the category "Software Developers ",and when the form is submitted the title should then be "Experience software developer - in Software Developers".
I also want the category to be put in the tag text-box automatically when the the form is submitted.
Please do not include any additional Jquery or Javascript sources,it is already included and any Jquery must be in no conflict mode.
I also need a textbox further up on the page.

Skills required:
AJAX, jQuery / Prototype, Wordpress
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