У вашего броузера проблема в совместимости с HTML5
Here is how to lock a folder in Windows 7. It is a simple batch command which regulates whether or not the folder can be accessed (with a password of course!). The batch command can be found here: http://pastebin.com/zrUCYba2 just copy and paste.
*Yes, you can easily find out the password, but not everyone is tech savvy enough to find it ? *