function validateCheckBoxList(source, args) 
{
    var cblToValidate = document.getElementById('<%= cblGenres.ClientID %>');
    for (var i = 0; i < cblToValidate.length; i++) 
    {
        if (cblToValidate[i].checked) 
        {
            args.IsValid = true;
            return;
        }
    }
    args.IsValid = false;
}

function clickButton(e, buttonid) 
{
    var evt = e ? e : window.event;
    var bt = document.getElementById(buttonid);
    if (bt) 
    {
        if (evt.keyCode == 13) 
        {
            bt.click();
            return false;
        }
    }
}