jquery

Moving html element up and down as you scroll the page
populating html select options on select changes
jQuery get the keycode of a key from the keyboard
jQuery getScript() cache busting parameters
jQuery pop up modal implementation
Create html table by jquery, ajax, php
Recursive Ajax Call
AJAX with jQuery and PHP example
Contact form with attachment using html, javascript, jquery and php
jQuery Cheatsheet
Loading a page into jQuery UI Dialog