function showPopup(msg)
{
   var help = document.getElementById('help');
   //popup.style.visibility = 'visible';
   help.innerHTML = msg + "<p><a style='color:white;font-weight:bold' href='javascript:void 0'    onclick='hidePopup();'>Close</a>";
   
}

function hidePopup()
{
document.all.popup.style.visibility = 'hidden';
}