Hello guys.

I'm doing a php member area where users enter several details such as languages spoken, countries visited etc.
I would like to benefit from Ajax in this. I would like the selected or filled fields to load "there".
For example: there is an input field where the user writes some comments. That input field is triggered (appears) with javascript once the user presses "add" or "modidy". Once the user submit his/her input, the input field untriggers (disappears) and the input appears instead.
After doing a bit of googling, I found that it is often named "ajax update" but did not find what I want.

If any of you know a simple script or link for that?
thanks a lot!