Color the rows of an HTML table with alternating classes, row and altRow. (jQuery)

gistfile1.js

/**
 * Color the table rows by adding row and altRow classes to the table.
 * Note: ignores any table rows with the class hidden.
 * @param id The id of the table
 */
function colorTableRows(id) {
    var rows = $("table#" + id + " > tbody > tr").not("tr.hidden").removeClass("altRow row");
    rows.filter(":odd").addClass("altRow");
    rows.filter(":even").addClass("row");
}