columns = getElementsByClass('column');

max_column_height = 0;
for (i = 0; i < columns.length; i++)
{
	if (parseFloat(columns[i].scrollHeight) > max_column_height)
		max_column_height = parseFloat(columns[i].scrollHeight);
}


for (i = 0; i < columns.length; i++)
{
	columns[i].style.height = max_column_height + "px";
}