function stripeTables()
{
    // Get all tables
    var tableIndex;
    var allTables = document.getElementsByTagName('table');
    // For each table get all rows
    for (tableIndex in allTables)
    {
        var table = document.getElementsByTagName('table')[tableIndex];
        var row;
        for (row in table.rows)
        {
            // Apply row classes (remember row is zero indexed so the first row
            // will be even)
            if (row % 2)
            {
                table.rows[row].className = 'odd';
            } else {
                table.rows[row].className = 'even';
            }
        }
    }
}