function highlightRow (row) { 
    for (var i = 0; i < row.cells.length; i++)
        highlightStyle(row.cells[i]);
}

function unhighlightRow (row) {
    for (var i = 0; i < row.cells.length; i++)
        unhighlightStyle(row.cells[i]);
}

function highlightStyle (object) {
    if (object.className.indexOf('-highlight') < 0)
        object.className += '-highlight';
}

function unhighlightStyle (object) {
    var idx = object.className.indexOf('-highlight');
    if (idx >= 0)
        object.className = object.className.substring(0, idx);
}