If you're viewing a slideshow and cannot access the arrows to get to the next page, try clearing the cache in the browser or viewing the slideshow in incognito mode.
How to Use Incognito/Private Window
To start it, click on the Chrome menu and select > New incognito window. The keyboard shortcut for Chrome is Ctrl+Shift+N.
To launch Mozilla Firefox browser in private browsing mode, click on Settings > New Private Window. The keyboard shortcut Ctrl+Shift+P works here too.
To launch InPrivate Browsing in Internet Explorer, click on Settings > Safety > InPrivate Browsing. You can also use the keyboard shortcut Ctrl+Shift+P to launch it.