Question: I would like to make a link from a web page to a file on a local filesystem and make it work in all browsers (or at least in Internet Explorer, Firefox and Chrome).

For example, the following works in Internet Explorer:

```
<a href="\\myserver\doc\info.pdf">Info here</a>

```

but not in Firefox and Chrome.

Is there a way to make a link that works in all browsers? 

Or a way to use javascript to detect which browser it is and then display the appropriate link based on the filename?

Answer: 
Links to local files on pages that were retrieved via HTTP(S) are deliberately disabled in Mozilla/Firefox, because they can be a security risk, and have been used in attacks in the past.

You can override this behaviour, however. For details, see [this article](http://kb.mozillazine.org/Firefox_:_Issues_:_Links_to_Local_Pages_Don%27t_Work) in MozillaZine.
try prefixing your url with file:///