HTML
	Images
	Tables
	Backgrounds
	Titles
	Forms
		inputs, passwords, textareas, radio buttons, checkboxes, etc.
	Image maps
	CSS
		Selectors
		Properties
		Separete CSS file

Javascript
	GetElementById
	reading and setting imput fields
	setting div and span with innerHTML
	events
		onclick, onsubmit, onkeyup, etc.
	AJAX
		sending request
		reading answer

Cookies
	Duration
	Where are they set
	Who can retrieve them

SQL
	SQL types
		int, float
		time types
		money types
		char and varchar
	creating a table
	Inserting into a table
	selecting from a table
	deleting from a table
	Reasonable database schemes
	indexes

PHP
	Variables and arrays
	Functions
	Objects
	Entering and leaving PHP mode
	connecting to mysql from php
	associative arrays
	file access
	regular expressions