function setClassName(elementID,classname)
{
    document.getElementById(elementID).className = classname;
}

function setVisible(elementID)
{
    document.getElementById(elementID).style.display = "block";
}

function setInvisible(elementID)
{
    document.getElementById(elementID).style.display = "none";
}

function radioValue(rObj) 
{
    for (var i=0; i<rObj.length; i++) if (rObj[i].checked) return rObj[i].value;
    return false;
}

function multipleValues(sObj, separator) 
{
    var rVal = '';
    for (var i=0; i<sObj.options.length; i++) with (sObj.options[i])
      if (selected) rVal += separator + value;
    return rVal.substring(separator.length);
}