if(document.images) {
    pics = new Array();
    pics[01] = new Image();
    pics[01].src = "l.jpg";
    pics[02] = new Image();
    pics[02].src = "m.jpg";
    pics[03] = new Image();
    pics[03].src = "r.jpg";
    pics[04] = new Image();
    pics[04].src = "l1.jpg";
    pics[05] = new Image();
    pics[05].src = "l2.jpg";
    pics[06] = new Image();
    pics[06].src = "m1.jpg";
    pics[07] = new Image();
    pics[07].src = "r1.jpg";
    pics[08] = new Image();
    pics[08].src = "r2.jpg";
  }
  
  function changer(from,to) {
    if(document.images) {
    	document.images[from].src = pics[to].src;
    }
  }