if (document.images) 
{
  image1on = new Image();
  image1on.src = "tema/yazi_1.gif";

  image2on = new Image();
  image2on.src = "tema/yazi_2.gif";
  
  image3on = new Image();
  image3on.src = "tema/yazi_3.gif";

  image4on = new Image();
  image4on.src = "tema/yazi_4.gif";

  image1off = new Image();
  image1off.src = "tema/yazi_11.gif";
  
  image2off = new Image();
  image2off.src = "tema/yazi_22.gif";
  
  image3off = new Image();
  image3off.src = "tema/yazi_33.gif";
  
  image4off = new Image();
  image4off.src = "tema/yazi_44.gif";

}
function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}
function irize(i1,i2,i3) {changeImages('image' + i1, 'image' +i1 + 'off');changeImages('image' + i2, 'image' +i2 + 'off');changeImages('image' + i3, 'image' +i3 + 'off');}
function artir(sayi){document.getElementById('metin').style.fontSize = sayi + 'pt'}