if(document.images) {
  pics = new Array(); 

  pics[1] = new Image();
  pics[1].src = "media/26/m0.jpg";

  pics[2] = new Image();
  pics[2].src = "media/31/m1.jpg";

  pics[3] = new Image();
  pics[3].src = "media/36/m2.jpg";

  pics[4] = new Image();
  pics[4].src = "media/41/m3.jpg";

  pics[5] = new Image();
  pics[5].src = "media/46/m4.jpg";

  pics[6] = new Image();
  pics[6].src = "media/51/m5.jpg";

  pics[7] = new Image();
  pics[7].src = "media/56/m6.jpg";

  pics[7] = new Image();
  pics[7].src = "media/61/m7.jpg";
}

function change(nr) {
    if (document.images)
        document.image.src = pics[nr].src;
}