Function jw_check()
    On error resume next
    Set cns=CreateObject("CnsHelper.CH")

    if (InStr(navigator.userAgent,"i-Nav")) then
        chk_in = "1"
    Else
        chk_in = "0"
    end if

    if IsObject(cns) then
        chk_jw = "1"
    Else
        chk_jw = "0"
    end if

    Document.write "<img src='img/null.gif?br=" + chk_in + chk_jw + "' width='1' height='1'>"

End Function