function updateSeasonDisplay(ctrlName) {
    var numSeasons = document.getElementById('numSeasons').value;
    var selectedSeason = document.getElementById(ctrlName).value;
    for (var ctr = 1; ctr <= numSeasons; ctr++) {
        document.getElementById('season' + ctr + 'div').style.display = (selectedSeason == 'season' + ctr) ? '' : 'none';
    }
}

function setClass(ctrlName, cssClass) {
    document.getElementById(ctrlName).className = cssClass;
}