Using Java Script detect if OS is 64 bit version or 32 bit.
Use following html code to show OS version: <html> <script> function onload() { if (navigator.userAgent.indexOf("WOW64") != -1 || navigator.userAgent.indexOf("Win64") != -1 ) { alert("64 bit"); } else { alert("32 bit"); } } </script> <body> <body onload="onload()" scrolling="no"> </body> </html> Ref: UserAgent (http://msdn.microsoft.com/en-us/library/ms537503%28v=vs.85%29.aspx)