function highlight(row, new_color) {
    if (typeof(row.style) == 'undefined' || typeof(row.cells) == 'undefined') {
        return false;
    }
    var num_rows = row.cells.length;
    for (var c = 0; c < num_rows; c++) {
        row.cells[c].bgColor = new_color;
    }
    return true;
}