function matchColumns()
{
  var columns = $A($$('#col1','#col2','#col3'));
  var column_height = 0;
  var max_height = 0;
  columns.each(function(column) {
    column_height = column.getHeight();
    max_height = ( column_height > max_height ) ? column_height : max_height;
  });
  columns.each(function(column) {
    column.setStyle({
      height: (max_height + 10) + 'px'
    });
  });
  //$A($$('.box')).each( function(box) { box.setStyle({ height: '140px'})} );

}