banner går i stå

Hej Jeg har lånt denne kode til banner rotation her på eksperten...det virker som om den går i stå når den har kørt lidt. Nogen der kan se hvad der er galt ?

<div id="Layer1" style="position:absolute; width:156px; height:183px; z-index:1">
              <!-- Start: ligHTCC Banner Rotator -->
              <script language='JavaScript'> <!--

browserOk = false;
if ( (parseInt(navigator.appVersion)>=4 )
  || ( navigator.appName == "Netscape"  ) ) {
  browserOk = true;
} else {
  alert("Sorry, Your browser do not support\n"
      +"lightcc's banner rotator javascript");
};
// some browsers (like Internet Explorer 3)
// do not support imageswitching.

// setup banner rotator
//
var imgWidth = 156;  // width of all the banners
var imgHeight = 183;  // height of all the banners
var nrURLs;

banner1 = "ban_dus.jpg";
banner2 = "ban_alea.gif";
banner3 = "ban_jakoba.gif";
banner4 = "ban_REN3I.gif";
banner5 = "ban_cara.gif";
banner6 = "laciebanner.jpg";
bannerMax = 6; // increase this nr if you add more banners
nrURLs = bannerMax

page1 = "http://members.tripod.com/~jakagg/";
page2 = "http://members.tripod.com/~ALEASWORLD/aleaspoem1.html";
page3 = "http://home.talkcity.com/MigrationPath/jakoba/";
page4 = "http://www.newwave.net/~renegade/";
page5 = "http://www.geocities.com/westhollywood/village/1161";
page6 = "http://ww2.netnitco.net/users/luvya/";
pageMax = 6; // increase this nr if you add more banners

if ( pageMax != nrURLs ) {
  if ( nrURLs > pageMax ) nrURLs = pageMax;
  alert("Javascript coding error !\n"
        +"You must have the same number of\n"
        +"of bannerURLs and pageURLs\n \n"
        +"Only the " +nrURLs +" first images will be shown.");
};

shownURL = 2;  // # banner currently shown
nextURL  = 2;  // # of next banner to be shown
nextPic  = 0;  // image object will go here
picID    = 0;  // local timekeeping variable
banFocus = false;

function getNextURL() {
  nextURL = Math.round( (Math.random()*nrURLs) +0.5 );
  nextPic = new Image (imgWidth,imgHeight);
  nextPic.src  = eval("banner"+nextURL);
};

if ( browserOk ) { getNextURL(); };

function getNextPic() {
  if  ( browserOk ) {
    if ( nextPic.complete == true ) {
//alert ( nextPic.src );
      document.images.pic1.src = nextPic.src;
      shownURL = nextURL;
      getNextURL();
      picID = setTimeout('getNextPic()',10000);
      if ( banFocus ) showURL(true);
    } else {
//alert ( "waiting for "+nextURL );
      picID = setTimeout('getNextPic()',1000);
    };
  };
};

function goThere() {
  top.location = eval("page"+shownURL);
};

function showURL(bool) {
  banFocus = bool;
  if ( bool == true ) {
    top.self.status = eval("page"+shownURL);
  } else {
    top.self.status = "";
  };
};

// --> </script>
              <center>
                <a href="java script:goThere();" onmouseover="showURL(true); return true;"
onmouseout="showURL(false); return true;"><img src="ban_alea.gif" width=156 height=183 name="pic1" alt="Banner Slide Show" border=0 hspace=0 vspace=0 /></a>
                <script language='javascript'>getNextPic()</script>
                <!-- End:  ligHTCC Banner Rotator -->
              </center>
            </div>