Spørmål til slideshow javascript

Hvorfor kan jeg kun få dette script til at vise det første billede i en serie?

<script language="JavaScript" type="text/javascript">
<!--
    // (C) 2000 www.CodeLifter.com
    // http://www.codelifter.com
    // Free for all users, but leave in this  header
    // NS4-6,IE4-6
    // Fade effect only in IE; degrades gracefully
   
    // =======================================
    // set the following variables
    // =======================================
   
    // Set slideShowSpeed (milliseconds)
    var slideShowSpeed = 5000
   
    // Duration of crossfade (seconds)
    var crossFadeDuration = 3
   
    // Specify the image files
    var Pic = new Array() // don't touch this
    // to add more images, just continue
    // the pattern, adding to the array below
   
    var p = 2; // amount of images in archive
   
    for (i = 0; i < p; i++){
        Pic[i] = '100-'+ZeroFill(i, 4)+'_IMG.JPG'
    }
   
    // =======================================
    // do not edit anything below this line
    // =======================================
   
    var t
    var j = 0
//    var p = Pic.length
   
    var preLoad = new Array()
    for (i = 0; i < p; i++){
      preLoad[i] = new Image()
      preLoad[i].src = Pic[i]
    }
   
    function runSlideShow(){
      if (document.all){
          document.images.SlideShow.style.filter="blendTrans(duration=2)"
          document.images.SlideShow.style.filter="blendTrans(duration=crossFadeDuration)"
          document.images.SlideShow.filters.blendTrans.Apply()     
      }
      document.images.SlideShow.src = preLoad[j].src
      if (document.all){
          document.images.SlideShow.filters.blendTrans.Play()
      }
      j = j + 1
      if (j > (p-1)) j=0
      t = setTimeout('runSlideShow()', slideShowSpeed)
    }
   
    function CvtNtoS(iNum) {
        return ("" + iNum);
    }

    /* This function prefixes strings with the correct # of 0's */
    function ZeroFill(iNum, iDigits) {
        var sNum = CvtNtoS(iNum);
        while (sNum.length < iDigits) sNum = "0" + sNum;
        return sNum;
    }
//-->
</script>