// for Netscape 3+ and IE 4+
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++; //unique name for each pop-up window
    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("pimg.htm", imgWinName, winFeatures);
  }
function winOpen(){
  if(popImg != null){ 
    if(popImg.closed != true)
		return true;
	else
		return false;
    }  
  else
    return false;
  }