Does somebody know how to hide the information that's passed in a Url please?

So instead of:


the url will state only:


...and the other vaiables will still be passed, except that they can't be seen by the user.

Hidden fields I know of already, but these still show the variables and their values when the user 'views source'.

Putting variables in the form action I know of already, but this doesn't solve the problem for links.

Thanks, if anybody knows, if it's possible.

All the best,