All details about the client's browser
<html> <body> <script type="text/javascript"> var x = navigator document.write("CodeName=" + x.appCodeName) document.write("<br>") document.write("MinorVersion=" + x.appMinorVersion) document.write("<br>") document.write("Name=" + x.appName) document.write("<br>") document.write("Version=" + x.appVersion) document.write("<br>") document.write("CookieEnabled=" + x.cookieEnabled) document.write("<br>") document.write("CPUClass=" + x.cpuClass) document.write("<br>") document.write("OnLine=" + x.onLine) document.write("<br>") document.write("Platform=" + x.platform) document.write("<br>") document.write("UA=" + x.userAgent) document.write("<br>") document.write("BrowserLanguage=" + x.browserLanguage) document.write("<br>") document.write("SystemLanguage=" + x.systemLanguage) document.write("<br>") document.write("UserLanguage=" + x.userLanguage) </script> </body> </html>