function ShowTip(id,status) {
    if (status=="on"){
        if (document.layers) document.layers[''+id+''].visibility = "show"
        else if (document.all) document.all[''+id+''].style.visibility = "visible"
        else if (document.getElementById) document.getElementById(''+id+'').style.visibility = "visible"
    } else
    if (status=="off"){
            if (document.layers) document.layers[''+id+''].visibility = "hide"
            else if (document.all) document.all[''+id+''].style.visibility = "hidden"
            else if (document.getElementById) document.getElementById(''+id+'').style.visibility = "hidden"
    }
}