http://fr.wikipedia.org/wiki/Selenium_%28informatique%29
http://fr.wikipedia.org/wiki/Selenium_IDE
Quick start : http://www.bryansgeekspeak.com/2014/03/automated-browser-testing-using-selenium.html
Setting selenium speed : http://www.jnhasty.com/2013/02/15/using-the-setspeed-setting-in-selenium-standalone-htmlsuite-mode/
Command line option : http://eswarg.blogspot.fr/2013/06/selenium-server-commandline-options.html