Clicking at coordinates without identifying element

Question

As part of my Selenium test for a login function, I would like to click a button by identifying its coordinates and instructing Selenium to click at those coordinates. This

Answer 1

If you can see the source code of page, its always the best option to refer to the button by its id or NAME attribute. For example you have button "Login" looking like this:

In that case is best way to do

selenium.click(id="login");

Just out of the curiosity - isnt that HTTP basic authentification? In that case maybe look at this: http://code.google.com/p/selenium/issues/detail?id=34