Give any div a class 'column' and if it's absolutely positioned this jQuery script will fix the height of the container for you.

Easy Columns

// Fix any absolutely positioned columns if necessary.
$(document).ready( function(){
   $('.column').each(function(){
      var cur = $(this);
      if(cur.css('position') == 'absolute') {
         var parent = $(cur.parent().get(0));
         if(cur.height() > parent.height()) {
            parent.css('height',cur.height());
         }
      }
   });
});