function GetValidChxList(source, args) {
    var cbs = $get('rdl').getElementsByTagName('input');
    args.IsValid = false;
    for (var i = 0, cb = cbs[i]; i < cbs.length; cb = cbs[++i]) {
        if (cb.type == 'checkbox') {
            if (cb.checked) {
                args.IsValid = true;
                break;
            }
        }
    }
}

$(document).ready(function() {



});