i am opening a popUp with an enlargement of a thumbnail for agallery . the code i have on each thiumbnail is this

  <a href="#"  onclick="MM_openBrWindow('akivaBigPicts.html','big','width=420,height=500'),test(0)"><img src="thumbnails/1.jpg" width="75" height="75" border="0" /></a>

the test function at the top of the page is:

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
function newImage(arg) {
 if (document.images) {
  rslt = new Image();
  rslt.src = arg;
  return rslt;
 }
}
function changeImages() {
 if (document.images && (preloadFlag == true)) {
  for (var i=0; i<changeImages.arguments.length; i+=2) {
   document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
  }
 }
}
var  ShowPhotoIndex;
 function  test(number){
 ShowPhotoIndex=number;
 }

this works in explorer and in mozila it doesnt, why?

i think the problem could be in th popUp it self called akivaBigPicts.html
that is where i am loading the big pictures to and i can go foarward/ backwards with Arrows. i also have a problem that it take it avery long time for the first picture to appear(in explorer)
the code is this:

 var Images=new Array (6);
 var loc=0;
 var ImageText=new Array()
ImageText[0]=" name 1 ";
ImageText[1]=" name2 ";
ImageText[2]=" name3";
ImageText[3]="name4";
ImageText[4]="name5";
ImageText[5]=" name6";
 function LoadPhotos()
 {
  for (i=0; i<Images.length; i++)
  {
   Images[i]=new Image();
   Images[i].src=(i+1)+".jpg";
  }
 }
 function NextPhoto()
 {
  loc++;
  if (loc>=Images.length)
  {
   loc=0;
  }
  textTemp=ImageText[loc];
  ShowPhoto (Images[loc].src,textTemp);
 }
 function PreviousPhoto()
 {
  loc--;
  if (loc<0)
  {
   loc=Images.length-1;
  }
  textTemp=ImageText[loc];
  ShowPhoto (Images[loc].src,textTemp);
 }
  function ShowPhoto (filename,textTemp)
 {
 
  pic.src=filename;
  document.getElementById("text").innerHTML=textTemp;
  pic.alt="Filename: "+filename;
  window.status=filename;
 
 }
  LoadPhotos();
 loc=4;
window.onload = function(){
  var i = 0;
  if (window.opener) i = window.opener.ShowPhotoIndex;
  pic.lowsrc="cover.gif";
 pic.src=(Images[i].src);
 document.getElementById("text").innerHTML=ImageText[i];
loc=i;
}

something here isnt working with mozila...