var aryImages = new Array(38);
  aryImages[0] = "/templates/images/lb_foto_home.gif";
  aryImages[1] = "/templates/images/lb_nationalepolitiek.gif";
  aryImages[2] = "/templates/images/lb_nationalepolitiek_ro.gif";
  aryImages[3] = "/templates/images/lb_internpolitiek.gif";
  aryImages[4] = "/templates/images/lb_internpolitiek_ro.gif";
  aryImages[5] = "/templates/images/lb_economie.gif";
  aryImages[6] = "/templates/images/lb_economie_ro.gif";
  aryImages[7] = "/templates/images/lb_justitie.gif";
  aryImages[8] = "/templates/images/lb_justitie_ro.gif";
  aryImages[9] = "/templates/images/lb_humaninterest.gif";
  aryImages[10] = "/templates/images/lb_humaninterest_ro.gif";
  aryImages[11] = "/templates/images/lb_media.gif";
  aryImages[12] = "/templates/images/lb_media_ro.gif";
  aryImages[13] = "/templates/images/lb_wetenschap.gif";
  aryImages[14] = "/templates/images/lb_wetenschap_ro.gif";
  aryImages[15] = "/templates/images/lb_sport.gif";
  aryImages[16] = "/templates/images/lb_sport_ro.gif";
  aryImages[17] = "/templates/images/lb_foto_nationalepolitiek.gif";
  aryImages[18] = "/templates/images/lb_foto_internpolitiek.gif";
  aryImages[19] = "/templates/images/lb_foto_economie.gif";
  aryImages[20] = "/templates/images/lb_foto_justitie.gif";
  aryImages[21] = "/templates/images/lb_foto_humaninterest.gif";
  aryImages[22] = "/templates/images/lb_foto_media.gif";
  aryImages[23] = "/templates/images/lb_foto_wetenschap.gif";
  aryImages[24] = "/templates/images/lb_foto_sport.gif";
  aryImages[25] = "/templates/images/header_home.gif";
  aryImages[26] = "/templates/images/header_home_ro.gif";
  aryImages[27] = "/templates/images/header_contact.gif";
  aryImages[28] = "/templates/images/header_contact_ro.gif";
  aryImages[29] = "/templates/images/header_redactie.gif";
  aryImages[30] = "/templates/images/header_redactie_ro.gif";
  aryImages[31] = "/templates/images/header_opleiding.gif";
  aryImages[32] = "/templates/images/header_opleiding_ro.gif";
  aryImages[33] = "/templates/images/header_oudstudenten.gif";
  aryImages[34] = "/templates/images/header_oudstudenten_ro.gif";
  aryImages[35] = "/templates/images/lb_foto_zoeken.gif";
  aryImages[36] = "/templates/images/lb_zoeken_ro.gif";
  aryImages[37] = "/templates/images/spacer.gif";

  for (i=0; i < aryImages.length; i++) {
    var preload = new Image();
    preload.src = aryImages[i];
  }

  function swap(base, imgIndex) {
    document[base].src = aryImages[imgIndex];
  }