board01_off  = new Image(); board01_off.src = "design/img/in3a.jpg";
board02_off  = new Image(); board02_off.src = "design/img/in5a.jpg";
board03_off  = new Image(); board03_off.src = "img/1d1.gif";
board04_off  = new Image(); board04_off.src = "img/3a1.jpg";
board05_off  = new Image(); board05_off.src = "img/3b1.jpg";

board01_on  = new Image(); board01_on.src  = "design/img/in3b.jpg";
board02_on  = new Image(); board02_on.src  = "design/img/in5b.jpg";
board03_on  = new Image(); board03_on.src  = "img/1d2.gif";
board04_on  = new Image(); board04_on.src  = "img/3a2.jpg";
board05_on  = new Image(); board05_on.src  = "img/3b2.jpg";

function act(S) 
{
  imgOn   = eval(S+"on.src");
  document[S].src = imgOn;
  return true;
}

function unact(S) 
{
  imgOff  = eval(S+"off.src");
  document[S].src = imgOff;
  return true;
}