It’s quite common these days for organisations to allow external access to their intranets using an SSL VPN, but it can be a bit of a pain if you’re trying to follow a ‘normal’ intranet hyperlink (eg from an e-mail) – you have to paste the URL into a box on the VPN homepage and have it converted.
To make it easier I’ve created a bookmarklet to do the conversion. It may not work for all sites, as I’m only constructing the new URI based on a simple inspection of a couple of pages.