t1 = new Image(); t1.src = "/gfx/eng/t1.gif";
t1a = new Image(); t1a.src = "/gfx/eng/t1_.gif";
t2 = new Image(); t2.src = "/gfx/eng/t2.gif";
t2a = new Image(); t2a.src = "/gfx/eng/t2_.gif";
t3 = new Image(); t3.src = "/gfx/eng/t3.gif";
t3a = new Image(); t3a.src = "/gfx/eng/t3_.gif";
t4 = new Image(); t4.src = "/gfx/eng/t4.gif";
t4a = new Image(); t4a.src = "/gfx/eng/t4_.gif";
t5 = new Image(); t5.src = "/gfx/eng/t5.gif";
t5a = new Image(); t5a.src = "/gfx/eng/t5_.gif";
t6 = new Image(); t6.src = "/gfx/eng/t6.gif";
t6a = new Image(); t6a.src = "/gfx/eng/t6_.gif";
t7 = new Image(); t7.src = "/gfx/eng/t7.gif";
t7a = new Image(); t7a.src = "/gfx/eng/t7_.gif";
t8 = new Image(); t8.src = "/gfx/eng/t8.gif";
t8a = new Image(); t8a.src = "/gfx/eng/t8_.gif";

function zmen(nazev, novy){
  document.images[nazev].src = novy;
  return;
}