Vertically align text inside an element with a percentage height?

Question

As I have an element with a percentage height I can't use the line-height hack. Does anyone have any ideas on how to solve this?

<div height="100%">
    I want to be vertically aligned in the middle
</div>

Answer 1

did you try style="line-height:100%;"

.. assuming its only 1 line.

Answer 2

Here's what you want: http://www.jakpsatweb.cz/css/priklady/vertical-align-valid-solution-en.html