function toggleButtonClass(btnId) {
    var btn = getElement(btnId);
    var lft = getElement(btnId + '_LeftTableCell');
    var rht = getElement(btnId + '_RightTableCell');
    if (btn.className == 'CyberhighButton') {
        btn.className = 'CyberhighButtonHover';
        lft.className = 'CyberhighButtonLeftHover';
        rht.className = 'CyberhighButtonRightHover';
    }
    else {
        btn.className = 'CyberhighButton';
        lft.className = 'CyberhighButtonLeft';
        rht.className = 'CyberhighButtonRight';
    }
}