1. 4 corners absolute positioned (only on fixed color background)
  2. sliding doors: only on fixed color background
  3. one image: can be used on buttons; flexible in width/ beware of triggering hasLayout in IE

date:2006

#1. four corners:作圖要留背景色而把module圓角內部顏色挖空

other stuff
content

改變module底色

#2. sliding doors:背景圖一定要切長一點, 可以用來作tab, 背景底色改變時同樣會有問題

what if background color changes?

改變module底色

#3. one image technique; can be used on buttons/images

button

需要彈性寬度時可用