function switchIMG(id, id2)
{
  i=document.getElementById(id).src.substring(document.getElementById(id).src.length-13);  
  a = document.getElementById(id2);
  
  /*if(i == "przyklad2.jpg")
  {
    document.getElementById(id).src = "images/przyklad3.jpg";
    a.href = "index.php?page=2&os=0";
  }
  else 
  {*/
    document.getElementById(id).src = "images/przyklad2.jpg";
    a.href = "index.php?page=2&os=9";
  //}
}