try 10, 20 ... 80

There are hundred of help articles. They are not well indexed but can be browsed in their directories or searched for. For an introduction to Firefox try * [[Get started with Firefox - An overview of the main features]] * Take the tour from https://www.mozilla.org/en-US/firefox/tour/ [https://www.mozilla.org/en-US/firefox/tour/] Generally for the help articles eg https://support.mozilla.org/en-US/kb/category/10 try 10, 20 ... 80 [https://support.mozilla.org/en-US/search?q=replacewith+your+words%2C+fewer+the+better&language=en-US&category=10&category=20&product=firefox&sortby_documents=relevance&a=1&w=1 search]

See also this thread by the OP: *[[/questions/1006422]]

BTW, update your Shockwave Flash.'''http://get.adobe.com/shockwave/'''