Chỉnh chiều cao của 2 column bằng nhau - Theo http://stackoverflow.com/

The problem is very simple:

First you have to add a class named "elements" to both columns so your html will look like this:

<div id="content">
  <div id="leftColumn" class="elements">
    left column stuff
  </div>
  <div id="rightColumn" class="elements">
    right column sidebar stuff
  </div>
</div>

After this, all you have to do is to compare the 2 heights, and aplay the maximum height to the smallest one. You do this like this:

$(document).ready(function () {
    var highestCol = Math.max($('#leftColumn').height(),$('#rightColumn').height());
    $('.elements').height(highestCol);      
});

Its a jQuery code witch calculate the maximum height between the 2 columns, and set them both with that height, resulting 2 columns with the same height. (the biggest one)

Theo http://stackoverflow.com/