"In this tutorial we will create an event for the "send" button click and introduce a new jQuery feature which allows us to create event shortcuts.
Let's create an event for the "send" button first and make the textbox empty when the button is clicked. You can place this event just right under the previous one, just make sure it is within the curly brackets of the "$(function(){});"..."
http://www.mybringback.com/?p=13729