Vertical centering — without using tables!
Every now and then, a developer will come up against something that was SOOOO easy with table-based layouts and winds up being a royal pain with CSS-based layouts. One of these “d’oh!” moments is when you try to vertically center an element on your web page. Umm… hang on, let me rephrase that: One of these “d’oh!” moments is when you try to vertically center an element on your web page when using Internet Explorer 6.