get height of a div and set the height of another div using it

Question

I have two divs, neither have a height set in css, as I want to take whatever height they end up as and set the other div to be that height.

The javascript I have is

Answer 1

Use offsetHeight - http://jsfiddle.net/HwATE/

function fixHeight() {
    var divh = document.getElementById('prCol1').offsetHeight; /* change this */
    document.getElementById('prCol1').innerHTML = '
' + divh + '
';
    document.getElementById('prCol2').style.height = divh + 'px';
}