function onlyOneA()
{
    document.crequest.bookParty.checked = false;
    document.crequest.requestCat.checked = false;
    document.crequest.partyDate.style.visibility = "hidden";
}

function onlyOneB()
{
    document.crequest.becomeDist.checked = false;
    document.crequest.requestCat.checked = false;
    if(document.crequest.bookParty.checked)
    {
        document.crequest.partyDate.style.visibility = "visible";
    }
    else
    {
        document.crequest.partyDate.style.visibility = "hidden";
    }
}

function onlyOneC()
{
    document.crequest.bookParty.checked = false;
    document.crequest.becomeDist.checked = false;
    document.crequest.partyDate.style.visibility = "hidden";
}