if (navigator.appVersion.indexOf("2.") != -1){
  check = false;
}
if ((navigator.appVersion.indexOf("3.") != -1) && (navigator.appName.indexOf("Explorer") != -1)){
  check = false;
}else {
  check = true;
}

origimage = new Image();
origimage.src = "images/dg1.gif";
image1on = new Image();
image1on.src = "images/dg1.gif";
image2on = new Image();
image2on.src = "images/dg2.gif";
image3on = new Image();
image3on.src = "images/dg3.gif";
image4on = new Image();
image4on.src = "images/dg4.gif";
image5on = new Image();
image5on.src = "images/dg5.gif";
image6on = new Image();
image6on.src = "images/dg6.gif";
image7on = new Image();
image7on.src = "images/dg7.gif";
image8on = new Image();
image8on.src = "images/dg8.gif";


function imageon(name)   {
  document.altimg.src = eval(name + "on.src");
}
function imageoff(name)  {
  document.altimg.src = eval(name + ".src");
}

function on(name)  {
  if (check == true){
  imageon(name);
  }
}
function off(name)  {
        if (check == true){
        imageoff(name);
        }
}


/* Change the banner when clicked on */

function changeBanner(self) {
  var uri = self.baseURI;
  if(self.src == uri+'images/banner5.gif') {
    self.src = uri+'images/banner6.gif';
  }else if(self.src == uri+'images/banner6.gif'){ 
    self.src = uri+'images/banner7.gif';
  } else { 
    self.src = uri+'images/banner5.gif';
  }
}