function ValidateListControl (source, arguments)
{
    arguments.IsValid = arguments.Value != "-1";
}

var helpPopup = null;
function ShowHelpPopup(uri)
{
    if (helpPopup != null)
        helpPopup.close();
    helpPopup = window.open(uri, "helpPopup","height=" + screen.availHeight + ",width=" + (screen.availWidth / 2.5) + ",left=0,top=0,resizable=yes,scrollbars=yes,status=no,toolbar=no,menubar=no,location=no");
}

function NavigateToLink (uri)
{
    window.navigate(uri);
}