var popWin = null    // use this when referring to pop-up window
var winCount = 0
var winName = "popWin"
function openPopWin(winURL, winWidth, winHeight, winFeatures, winLeft, winTop){
  var d_winLeft = 20  // default, pixels from screen left to window left
  var d_winTop = 20   // default, pixels from screen top to window top
  var ran_unrounded=Math.random()*999999;
  var ran_number=Math.round(ran_unrounded);
  winName = "popWin" + ran_number; //unique name for each pop-up window

  if (openPopWin.arguments.length >= 4)  // any additional features?
    winFeatures = "," + winFeatures
  else
    winFeatures = ""
  if (openPopWin.arguments.length == 6)  // location specified
    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(){    // close pop-up window if it is open
  if (navigator.appName != "Microsoft Internet Explorer"
      || parseInt(navigator.appVersion) >=4) //do not close if early IE
    if(popWin != null) if(!popWin.closed) popWin.close()
  }
function getLocation(winWidth, winHeight, winLeft, winTop){
  return ""
  }

function getLocation(winWidth, winHeight, winLeft, winTop){
  var winLocation = ""
  if (winLeft < 0)
    winLeft = screen.width - winWidth + winLeft
  if (winTop < 0)
    winTop = screen.height - winHeight + winTop
  if (winTop == "cen")
    winTop = (screen.height - winHeight)/2 - 20
  if (winLeft == "cen")
    winLeft = (screen.width - winWidth)/2
  if (winLeft>0 & winTop>0)
    winLocation =  ",screenX=" + winLeft + ",left=" + winLeft
                + ",screenY=" + winTop + ",top=" + winTop
  else
    winLocation = ""
  return winLocation
  }


function createWindow(what) {
    var URL = what.URL.value;

    var windowName = what.windowName.value;

    var features =
        'width='        + what.width.value +
        ',height='      + what.height.value +
        ',directories=' + (what.directories.checked - 0) +
        ',location='    + (what.location.checked - 0) +
        ',menubar='     + (what.menubar.checked - 0) +
        ',scrollbars='  + (what.scrollbars.checked - 0) +
        ',status='      + (what.status.checked - 0) +
        ',toolbar='     + (what.toolbar.checked - 0) +
        ',resizable='   + (what.resizable.checked - 0);

    window.open (URL, windowName, features);
}







var popUpWin=0;
function popUpWindow(URLStr, left, top, width, height)
{
  if(popUpWin)
  {
    if(!popUpWin.closed) popUpWin.close();
  }
  popUpWin = open(URLStr, 'ppUpWin', 'toolbar=no,location=no,directories=no,status=yes,menub ar=no,scrollbars=yes,resizable=yes,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}

function popUpWindowPrint(URLStr, left, top, width, height)
{
  if(popUpWinPrint)
  {
    if(!popUpWinPrint.closed) popUpWin.close();
  }
  popUpWinPrint = open(URLStr, 'ppUpWinPrint', 'toolbar=yes,location=no,directories=no,status=yes,menub ar=no,scrollbars=yes,resizable=yes,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}