AJAX+PHP/MySQL : Private website, simple text manipulation

Hi! I need a private website with AJAX & PHP/MySQL (or any working technologie for this project). It's seems wierd but it's very simple in fact. I need a page with 2 text areas. I need to past some text in the first text area. Once done, if I click on a word or select words it'll be set in the second text area. An AJAX script will send a request to a php script which will search for synonym of this word/sentence in database. If founds, this synonyms will be added to the second text area. If I add a word by hand to the second text area, it'll be added to the database as a synonym of the first word/sentence. Sorry if it's not clear. I can explain it by IM or mail with a video of the product with less options. PM me for more details. Add the word "privateproject" in your bid please. It's a very fast project, It's only I don't have time to code it. Will pay with paypal. I expect no more than 60$. Thanks Each action must NOT refresh the page. I can provide a part of the javascript code to update a text box when there is a click on a word.