var pic = null
var popImg = null  // use this when referring to pop-up image
var picTitle = null
var imgCount = 0
var imgWinName = "popImg"
function openPopImg(picName, windowTitle, windowWidth, windowHeight){
  var x = Math.round((screen.availWidth - windowWidth) / 2);
  var y = Math.round((screen.availHeight - windowHeight) / 2);

	  center = ' ,left=' + x + ',top=' + y;
  
  closePopImg()
  picTitle = windowTitle
  imgWinName = "popImg" + imgCount++ //unique name for each pop-up window
  popImg = window.open(picName, imgWinName,
           "toolbar=no,scrollbars=no,resizable=no,width="
           + (parseInt(windowWidth)+20)  + ",height="
           + (parseInt(windowHeight)+15) + center)
  }
function closePopImg(){    // 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(popImg != null) if(!popImg.closed) popImg.close()
  }
function setStatus(msg){
  status = msg
  return true
  }

var priorPic = new Array()
var noPic = 0
function openPopImg(picName,  windowTitle, windowWidth, windowHeight){
  var x = Math.round((screen.availWidth - windowWidth) / 2);
  var y = Math.round((screen.availHeight - windowHeight) / 2);

	  center = ' ,left=' + x + ',top=' + y;

  var i = 0
  var foundit = false
  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++ //unique name for each pop-up window
    popImg = window.open("" , imgWinName,
             "toolbar=no,scrollbars=no,resizable=no,width="
             + windowWidth + ",height=" + windowHeight + center)
    if(foundit){
      fabricatePage()
      }
    else{
      priorPic[noPic++] = pic
      fabricateNewImagePage()
      }
    }
  }
function fabricatePage(){
  var htmlStr =
    '<HTML><HEAD><TITLE>' + picTitle + '</TITLE></HEAD>'
  + '<BODY background="beelden/a_onder.jpg" bgcolor="#C0C0C0">' + '<div id="Layer1" style="position:absolute; left:0px; top:0px; z-index:1"><img src=' + pic + '></div></BODY></HTML>'
  popImg.document.open()
  popImg.document.write(htmlStr)
  popImg.document.close()
  }
function fabricateNewImagePage(){
  var htmlStr =
    '<HTML><HEAD><TITLE>' + picTitle + '</TITLE></HEAD>'
  + '<BODY background="beelden/a_onder.jpg" bgcolor="#C0C0C0" onLoad="opener.fabricatePage()">'
  + '<h3>Bezig met laden van de foto.</h3><BR>'
  + '<img src=' + pic + ' width=100% height=80%>'
  + '</BODY></HTML>'
  popImg.document.write(htmlStr)
  popImg.document.close()
  }
function winOpen(){
  if(popImg != null){
    if(popImg.closed != true) return true; else return false
    }
  else
    return false
  }

var wnd = null;



function popup (url) {

if (wnd) if (!wnd.closed) wnd.close();
wnd = window.open(url, "new_window", "toolbar=no,location=no,directories=no,status=no,menubar=no,width=300,height=300,scrollbars=yes,resizable=no");
}

var wnd = null;

function popup2 (url) {

if (wnd) if (!wnd.closed) wnd.close();
wnd = window.open(url, "new_window", "toolbar=no,location=no,directories=no,status=no,menubar=no,width=625,height=400,scrollbars=yes,resizable=no");
}

