var pic = null
var popImg = null
var picTitle = null
var imgCount = 0
var imgWinName = "popImg"

function openPopImg(picName, windowTitle, windowWidth, windowHeight){
  closePopImg()
  picTitle = windowTitle
  imgWinName = "popImg" + imgCount++
  popImg = window.open(picName, imgWinName,
           "toolbar=no,scrollbars=no,resizable=no,width=" + (parseInt(windowWidth)+20)  + ",height=" + (parseInt(windowHeight)+15)) 
  }

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

function setStatus(msg){
  status = msg
  return true
  }
  
var priorPic = new Array()
var noPic = 0
var foundit = false

function openPopImg(picName, windowTitle, windowWidth, windowHeight){
  var i = 0
  if(pic == picName && winOpen()){
    popImg.focus()
    }
  else{
    foundit = false
    for(i=0; i<=noPic; i++){
      if (priorPic[i] == picName)
        foundit = true 
      }
    pic = picName
    closePopImg()
    picTitle = windowTitle
    imgWinName = "popImg" + imgCount++
    if(!foundit){
      priorPic[noPic++] = pic
      }
    popImg = openPopImgWin(imgWinName, windowWidth, windowHeight)
    }
  }

function openPopImgWin(imgWinName, windowWidth, windowHeight){
  var winFeatures = "toolbar=no,scrollbars=no,resizable=no,width=" + windowWidth + ",height=" + windowHeight
  return window.open("container.html", imgWinName, winFeatures)
  }
  
function winOpen(){
  if(popImg != null){ 
    if(popImg.closed != true) return true; else return false
    }  
  else
    return false
  }

function openPopImgWin(imgWinName, windowWidth, windowHeight){
  var leftX = 20
  var topY = 20
  var winFeatures = "toolbar=no,scrollbars=no,resizable=no,width=" + windowWidth + ",height=" + windowHeight
  if (leftX>0){
    winFeatures += ",screenX=" + leftX + ",left=" + leftX	
                + ",screenY=" + topY + ",top=" + topY
    }
  return window.open("container.html", imgWinName, winFeatures)
  }