To change your password you need to be logged in. Go to the 'My CJO Links' drop-down menu at the top left-hand side of the page and click on 'Change Registration Details'.
This will bring up you registration page. Go to the 'Password' input field (you may have to scroll down to find it) and delete the existing password. Enter your new password and repeat the process in the 'Confirm Password' input field below. Type a new question or sentence that will remind you of your password in the 'Question' input field, then click 'Update' at the bottom of the page.