Try to force your web browser to reload first. It's not always effective, but it is less invasive and worth trying. Simply hit these buttons while on the page in question.
Windows: ctrl + F5
Mac/Apple: Apple + R or command + R
Linux: F5
If this does not resolve your issue, clear your web browser's cache, cookies, and history. This website explains how: http://kb.iu.edu/data/ahic.html
KB0010624