if (document.images) 
{
clickme1 = new Image; 
clickme1.src = "firma.jpg";
clickme2 = new Image; 
clickme2.src = "firma1.jpg";
clickme3 = new Image; 
clickme3.src = "oferta.jpg";
clickme4 = new Image; 
clickme4.src = "oferta1.jpg";
clickme5 = new Image; 
clickme5.src = "kontakt.jpg";
clickme6 = new Image; 
clickme6.src = "kontakt1.jpg";
clickme7 = new Image; 
clickme7.src = "powrot.jpg";
clickme8 = new Image; 
clickme8.src = "powrot1.jpg";

}

function zmien(imgName,imgObjName) 
{
if (document.images) 
{
 document.images[imgName].src = eval(imgObjName + ".src");
 }
 }