文件URL或如何从URL打开文件夹

I have several users on an intranet and all have a mapped drive to server (E:). All users are on Win7 and use FireFox. I have used XAMPP on the server to allow users access to MySQL files using PHP. They currently use windows explorer to open a folder on (E:) so save/modify files (jpgs, docs etc.). I want to put a link in the html to open this folder for them.I have several users on an intranet and all hav