var popWin = null
var winCount = 0
var winName = "popWin"

function openPopWin(winURL, winWidth, winHeight, winFeatures, winLeft, winTop){
  var d_winLeft = 20
  var d_winTop = 20

  winName = "popWin" + winCount++

  closePopWin()

  if (openPopWin.arguments.length >= 4)
    winFeatures = ",resizable=yes,scrollbars=yes," + winFeatures
  else
    winFeatures = ",resizable=yes,scrollbars=yes"

  if (openPopWin.arguments.length == 6)
    winFeatures += getLocation(winWidth, winHeight, winLeft, winTop)
  else
    winFeatures += getLocation(winWidth, winHeight, d_winLeft, d_winTop)

  popWin = window.open(winURL, winName, "width=" + winWidth +
                       ",height=" + winHeight + winFeatures)
}

function closePopWin(){
  if (navigator.appName != "Microsoft Internet Explorer" ||
                           parseInt(navigator.appVersion) >=4)
    if(popWin != null) if(!popWin.closed) popWin.close()
}

function getLocation(winWidth, winHeight, winLeft, winTop){
  return ""
}