var browser=0;
var name=navigator.appName;
var version = parseInt(navigator.appVersion); 
if ((name == "Netscape" && version >= 3)||(name =="Microsoft Internet Explorer" &&version==4)) {
  browser = 1;


  kn1on = new Image(8,9);
  kn1on.src = "image/staple.gif";
  kn1off = new Image(8,9);
  kn1off.src = "image/staple_en.gif";
  
  kn2on = new Image(8,9);
  kn2on.src = "image/staple.gif";
  kn2off = new Image(8,9);
  kn2off.src = "image/staple_en.gif";
  
  kn3on = new Image(8,9);
  kn3on.src = "image/staple.gif";
  kn3off = new Image(8,9);
  kn3off.src = "image/staple_en.gif";
  
  kn4on = new Image(8,9);
  kn4on.src = "image/staple.gif";
  kn4off = new Image(8,9);
  kn4off.src = "image/staple_en.gif";
  
  kn5on = new Image(8,9);
  kn5on.src = "image/staple.gif";
  kn5off = new Image(8,9);
  kn5off.src = "image/staple_en.gif";
  
  kn6on = new Image(8,9);
  kn6on.src = "image/staple.gif";
  kn6off = new Image(8,9);
  kn6off.src = "image/staple_en.gif";

}

function switchto(name, on) {
  if (browser == 1) {
    image = eval(name + (on == 1 ? "on.src" : "off.src"));
    document[name].src = image;
  }
}