//--- Check Browse ---

 function isNetscape(v) {
   /*
   ** Check if the browser is Netscape compatible
   **    v  version number
   ** returns  true if Netscape and version equals or greater
   */
   return isBrowser("Netscape", v);
   }

 function isMicrosoft(v) {
   /*
   ** Check if the browser is Microsoft Internet Explorer compatible
   **    v  version number
   ** returns  true if MSIE and version equals or greater
   */
   return isBrowser("Microsoft", v);
   }

 function isBrowser(b,v) {
   /*
   ** Check if the current browser is compatible
   **  b  browser name
   **  v  version number (if 0 don't check version)
   ** returns true if browser equals and version equals or greater
   */
   browserOk = false;
   versionOk = false;

   browserOk = (navigator.appName.indexOf(b) != -1);
   if (v == 0) versionOk = true;
   else  versionOk = (v <= parseInt(navigator.appVersion));
   return browserOk && versionOk;
   }

//--- end Check Browse ---