[Javascript] Extracting data from current URL

[Steve Hearne]

Hello.

I would really like to be able to extract some information from a URL.  At my company we use a portal which acts as the core of our intranet.  In order for our users to transparently login to to this portal, I have supplied each of them with a URL containing username, password and servername etc.  This looks something like;

http://servername/servlet/WebClient/main?user=stevehearne&pass=mypassword&server=127.0.0.1 

Now, when a user has to,for instance fill out a form, then I'd really like to be able to know what their username is...Can i parse this URL with JavaScript once they've arrived at the homepage in order to discover their username?

Thanks for any help or advice you can offer,
Steve