function check_browser()
{
  var version_number = navigator.appVersion.charAt(0);
  if (navigator.appName.indexOf("Netscape") != -1)
  {
    if (version_number < 3)
    {
      return false;
    }
    return true;
  }
  if (navigator.appName.indexOf("Explorer") != -1)
  {
    if (version_number < 4)
    {
      return false;
    }
    return true;
  }
  // unknown
  return false;
}
  if (check_browser()) 
{  
  <!--menu-->
  
HEAD11 = new Image(50,20);
HEAD12 = new Image(50,20);
HEAD13 = new Image(50,20);
HEAD14 = new Image(50,20);
HEAD15 = new Image(50,20);
HEAD16 = new Image(50,20);

HEAD11on = new Image(50,20);
HEAD12on = new Image(50,20);
HEAD13on = new Image(50,20);
HEAD14on = new Image(50,20);
HEAD15on = new Image(50,20);
HEAD16on = new Image(50,20);

HEAD21 = new Image(50,20);
HEAD22 = new Image(50,20);
HEAD23 = new Image(50,20);
HEAD24 = new Image(50,20);
HEAD25 = new Image(50,20);
HEAD26 = new Image(50,20);

HEAD21on = new Image(50,20);
HEAD22on = new Image(50,20);
HEAD23on = new Image(50,20);
HEAD24on = new Image(50,20);
HEAD25on = new Image(50,20); 
HEAD26on = new Image(50,20);

HEAD31 = new Image(50,20);
HEAD31on = new Image(50,20);


BLANK = new Image(118,13);


HEAD11.src = "img/nav/home.gif";
HEAD12.src = "img/nav/why.gif";
HEAD13.src = "img/nav/services.gif";
HEAD14.src = "img/nav/photos.gif";
HEAD15.src = "img/nav/testimonials.gif";
HEAD16.src = "img/nav/contact.gif";

HEAD11on.src = "img/nav/homeD.gif";
HEAD12on.src = "img/nav/whyD.gif";
HEAD13on.src = "img/nav/servicesD.gif";
HEAD14on.src = "img/nav/photosD.gif";
HEAD15on.src = "img/nav/testimonialsD.gif";
HEAD16on.src = "img/nav/contactD.gif";



HEAD21.src = "img/photos/pg1.gif";
HEAD22.src = "img/photos/pg2.gif";
HEAD23.src = "img/photos/pg3.gif";
HEAD24.src = "img/photos/pg4.gif";
HEAD25.src = "img/photos/pg5.gif";
HEAD26.src = "img/photos/pg6.gif";

HEAD21on.src = "img/photos/pg1R.gif";
HEAD22on.src = "img/photos/pg2R.gif";
HEAD23on.src = "img/photos/pg3R.gif";
HEAD24on.src = "img/photos/pg4R.gif";
HEAD25on.src = "img/photos/pg5R.gif";
HEAD26on.src = "img/photos/pg6R.gif";


HEAD31.src = "img/nav/blog.gif";
HEAD31on.src = "img/nav/blogD.gif";



BLANK.src = "img/trans.gif";
}