if you wish that file to be modified and saved back use webdav on the server. I agree it is a client side check by the browser and can be bypassed by the client.

__________________
Another lame attempt to get to 2000 posts
M i C k E Y

2017 Tesla Model X
2014 Porsche Panamera-S e-Hybrid (sold)
2012 Porsche Cayenne
2001 X5 3.0 (sold)
2003 Carrera 911 Cabrio (sold)