Firefox is fully compatible with these notes, but it may require you to (re)activate Java. To enable it, go to the Firefox menu (top left) and go to Add-ons/Plugins. There you scroll down to Java (TM) Platform SE 6 U31 and enable it. You may need to restart your browser.
Right-mouse-click in any frame. The destination can be set to Acrobat if you wish to save the notes as PDF.