With the release of version 26 of the Firefox browser, Mozilla has implemented a plug-in activation scheme that had been hinted at back in September 2013. The new version of the Web browser makes Click to Play functionality for Java plug-ins the default behavior, requiring you to click an applet on a Web page to authorize Java to run. Previously, Mozilla had promised to make this the default for all plug-ins, save for the most recent version of Flash, but only Java gets the treatment in Firefox 26. The update also adds support for script-generated password fields, improves page load times by not decoding images that aren’t visible, and fixes the AudioToolbox MP3 backend for Mac OS X. (Free, 45.5 MB, release notes)
Option-Click in Scroll Bars for Jump Scrolling
In Mac OS X in general, and thus in most native Mac OS X applications, hold down the Option key and click anywhere in a window's scroll bar to jump to that spot (rather than scrolling one screen). If you like this behavior, you can make it the default in the Appearance preference pane. For "Click in the scroll bar to:" select "Jump to here."