Proxy Authorization Required!

I have created an html page to use at work. But i connect through a proxy server that requires Login and password.
I know the login and password so i could just type it in but I would much rather code that into my page so that when a user opens the page it "Passes" the login and password automaticly.
How could one do this?

what serverside language are you using? cgi, php, asp?

just have the login and passwords as variables in teh language or just have them in a hidden input field.