if (navigator.appVersion.substring(0,1) >= 3){ 

  image1on = new Image();
  image1on.src = "images/sidehomeon.gif";

  image1off = new Image();
  image1off.src = "images/sidehomeoff.gif";

  image2on = new Image();
  image2on.src = "images/sideabouton.gif";

  image2off = new Image();
  image2off.src = "images/sideaboutoff.gif";

  image3on = new Image();
  image3on.src = "images/sideserviceson.gif";

  image3off = new Image();
  image3off.src = "images/sideservicesoff.gif";

  image4on = new Image();
  image4on.src = "images/sidegalleryon.gif";

  image4off = new Image();
  image4off.src = "images/sidegalleryoff.gif";

  image5on = new Image();
  image5on.src = "images/sideestimateon.gif";

  image5off = new Image();
  image5off.src = "images/sideestimateoff.gif";

  image6on = new Image();
  image6on.src = "images/sidelinkson.gif";

  image6off = new Image();
  image6off.src = "images/sidelinksoff.gif";

  image7on = new Image();
  image7on.src = "images/sidecontacton.gif";

  image7off = new Image();
  image7off.src = "images/sidecontactoff.gif";
}

function changeImages() {
if (navigator.appVersion.substring(0,1) >= 3){ 
for (var i=0; i<changeImages.arguments.length; i+=2) {
document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}