function SimpBrowserTest() {
if (navigator.appName == 'Netscape' && parseFloat(navigator.appVersion) >= 4)
   {
    window.location='rockart.htm#ROCK_ART';
   }
else {
     if (navigator.appName == 'Microsoft Internet Explorer'  && parseFloat(navigator.appVersion) >= 4)
       {
        window.location='rockart.htm#ROCK_ART';
       }
     else {
         window.location='rockartO.htm#ROCK_ART';
         }
     }
}