function zimg()//загрузка рисунков
{
  main = new Image();main.src = "Pictures/MAINOFF.GIF";
  sena = new Image();sena.src = "Pictures/SENAOFF.GIF";
  cont = new Image();cont.src = "Pictures/CONTOFF.GIG";
  partners = new Image();partners.src = "Pictures/partnersoff.gif";
  main0 = new Image();main.src = "Pictures/MAIN0.GIF";
  sena0 = new Image();sena.src = "Pictures/SENA0.GIF";
  cont0 = new Image();cont.src = "Pictures/CONT0.GIF";
  partners0 = new Image();partners.src = "Pictures/partners0.gif";
  domik=new Image();domik.src = "Pictures/domoff.gif";
  zvezda=new Image();zvezda.src = "Pictures/staroff.gif";
  pismo=new Image();pismo.src = "Pictures/mailoff.gif";
  return true;
}
zimg()
function ton(imageName) 
 {
 var s=document[imageName].src;
 var lastPoint=s.lastIndexOf('.');
 var konec=s.charAt(lastPoint-1);
 if(konec=='n') s="/Pictures/"+imageName + "off.gif";
 if(konec=='N') s="/Pictures/"+imageName + "OFF.GIF";
 if(konec=='f') s="/Pictures/"+imageName + "on.gif";
 if(konec=='F') s="/Pictures/"+imageName + "ON.GIF";
 document[imageName].src = s;
  return true;
}//ton