var win1Open = null
var win2Open = null
var win3Open = null
var win4Open = null
var win5Open = null
var win6Open = null
var win7Open = null

function openPopUp(windowURL, windowName, windowWidth, windowHeight, scrollBar){
  var winHandle = window.open(windowURL,windowName,"toolbar=no,scrollbars="+scrollBar+",resizable=yes,width=" + windowWidth + ",height=" + windowHeight)
  return winHandle
  }
  
function winClose(){    // close all open pop-up windows   
  if(win1Open != null) win1Open.close() 
  if(win2Open != null) win2Open.close()
  if(win3Open != null) win3Open.close()
  if(win4Open != null) win4Open.close()
  if(win5Open != null) win5Open.close()
  if(win6Open != null) win6Open.close()
  if(win7Open != null) win7Open.close()

  }
function openPopUpWindow(){}  // does nothing but required by JavaScript & shows in status bar