imagepath="images/center_img/";
    buttones[5].src=imagepath+"button_0.jpg";
    buttones_over[5].src=imagepath+"button_0_over.jpg";
   for(i=1;i<5;i++){
       buttones[i + 5].src=imagepath+"button_"+i+".gif";
       buttones_over[i + 5].src=imagepath+"button_"+i+"_over.gif";
       }