Grab information from textfield without refresh

Am trying to get information typed into a text field without refreshing the form. I want to do this because I want to build an app that relies on google maps, and sometimes google gets an attitude about how an address is typed in. So I just want this google map to update as the address is typed in.

A little jquery trick will do, something like:

<?php echo CHtml::textField('latitude', '', array('id' => 'latitude')); ?>

$('#latitude').change(function(e) {


     url: '......',

     ....other stuff...