JQuery :: Clear An Input Box?

After a user successfully logs in, I'm hidng the login div, and displaying the 'loggedin' div. However, if someone clicks on logout, the username and password fields still have the login credentials in them. So, I need to clear those text boxes, along with the 'remember me' checkbox.

Here is my code:

I've tried single quotes, double quotes and other variations. Nothing is working.

However, that 'alert' does show the value in the username box.

Here is the code for the login, and loggedin divs and forms:

Just a noobish question here, is it ok to assign the same id, name, and class to each form object as long as they are unique per form object?

I.E. - id="signout" name="signout" class="signout"