image1= new Image();
 image1.src = "../buttons/b_03_01_posi_a.gif";
 image1on = new Image();
 image1on.src = "../buttons/b_03_01_posi_b.gif";
 image2= new Image();
 image2.src = "../buttons/b_03_02_druc_a.gif";
 image2on = new Image();
 image2on.src = "../buttons/b_03_02_druc_b.gif";
 image3= new Image();
 image3.src = "../buttons/b_03_03_temp_a.gif";
 image3on = new Image();
 image3on.src = "../buttons/b_03_03_temp_b.gif";
 image4= new Image();
 image4.src = "../buttons/b_03_04_rota_a.gif";
 image4on = new Image();
 image4on.src = "../buttons/b_03_04_rota_b.gif";
 image5= new Image();
 image5.src = "../buttons/b_03_05_opti_a.gif";
 image5on = new Image();
 image5on.src = "../buttons/b_03_05_opti_b.gif";
 image6= new Image();
 image6.src = "../buttons/b_03_06_verf_a.gif";
 image6on = new Image();
 image6on.src = "../buttons/b_03_06_verf_b.gif";

 image11= new Image();
 image11.src = "04_rota_a.gif";
 image11on = new Image();
 image11on.src = "04_rota_b.gif";


 function on(name)   {
         document[name].src = eval(name + "on.src");
 }
 function off(name)  {
         document[name].src = eval(name + ".src");
 }