  <!--Hide script from old browsers

  var adBannerImages = new Array("http://www.dtl.org/books/images/ads/banners/alt.gif",
                                 "http://www.dtl.org/books/images/ads/banners/alt_conc.gif",
                                 "http://www.dtl.org/books/images/ads/banners/alt_cv.gif",
                                 "http://www.dtl.org/books/images/ads/banners/dbbv.gif",
                                 "http://www.dtl.org/books/images/ads/banners/nwt.gif",
                                 "http://www.dtl.org/books/images/ads/banners/swb.gif");


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                                 "http://www.dtl.org/books/images/ads/covers/dbbv.jpg",
                                 "http://www.dtl.org/books/images/ads/covers/nwt.jpg",
                                 "http://www.dtl.org/books/images/ads/covers/swb.jpg",
                                 "http://www.dtl.org/books/images/ads/covers/swb2_1.jpg");

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  var thisBanner = 0;
  var bannerImageCount = 6;
  var coverImageCount = 7;

  
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              document.adBanner.src = adBannerImages[thisBanner];
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  // end hiding script from old browsers -->