browse-url-of-file-hook is a variable defined in `browse-url.el'.
Its value is
This variable may be risky if used as a file-local variable.
Run after `browse-url-of-file' has asked a browser to load a file.
Set this to `browse-url-netscape-reload' to force Netscape to load the
file rather than displaying a cached copy.
You can customize this variable.