Sometimes a script isn't needed. When I encounter an ad - the first thing I do is use adblock plus and its element hiding helper. Adblock Plus https://addons.mozilla.org/en-US/firefox/addon/1865 Adblock Plus: Element Hiding Helper https://addons.mozilla.org/en-US/firefox/addon/4364 Rick752's EasyList Filters for Adblock Plus http://easylist.adblockplus.org/ Often you can block ads that pop up in your tab by using adblock plus and clicking around to create filters For reason.com adblock plus filters are: <pre>reason.com##DIV#donationdrive_popup_content reason.com##DIV#donationdrive_popup_overlay</pre> A good search term is "interstitial" - the technical phrase for "full page ad" etc. ---- In fact - this thread reminded me that the best way to block ads is before I even even see them. I'm going to experiment with these filters I just made: <pre>##DIV[id*="popup"] ##DIV[id*="overlay"]</pre> Important - they may cause problems and/or need exceptions - I don't know because I've only used them for, literally, a minute. But I've never met a "popup" or "overlay" that I've liked. ---- <blockquote>disabling JS also works</blockquote> Disabling particular sites might limit some stuff - but you can't block all js. If you do then flash and a whole bunch of other stuff - links and whatever may not work. <p>Sometimes a script isn't needed. When I encounter an ad - the first thing I do is use adblock plus and its element hiding helper.</p> <p>Adblock Plus <br /><a href="https://addons.mozilla.org/en-US/firefox/addon/1865">https://addons.mozilla.org/en-US/firefox/addon/...</a></p> <p>Adblock Plus: Element Hiding Helper <br /><a href="https://addons.mozilla.org/en-US/firefox/addon/4364">https://addons.mozilla.org/en-US/firefox/addon/...</a></p> <p>Rick752's EasyList Filters for Adblock Plus <br /><a href="http://easylist.adblockplus.org/">http://easylist.adblockplus.org/</a></p> <p>Often you can block ads that pop up in your tab by using adblock plus and clicking around to create filters</p> <p>For reason.com adblock plus filters are:</p> <p><pre>reason.com##DIV#donationdrive_popup_content reason.com##DIV#donationdrive_popup_overlay</pre></p> <p>A good search term is "interstitial" - the technical phrase for "full page ad" etc.</p> <p>----</p> <p>In fact - this thread reminded me that the best way to block ads is before I even even see them.</p> <p>I'm going to experiment with these filters I just made:</p> <p><pre>##DIV[id*="popup"] ##DIV[id*="overlay"]</pre></p> <p>Important - they may cause problems and/or need exceptions - I don't know because I've only used them for, literally, a minute. But I've never met a "popup" or "overlay" that I've liked.</p> <p>----</p> <p><blockquote>disabling JS also works</blockquote></p> <p>Disabling particular sites might limit some stuff - but you can't block all js. If you do then flash and a whole bunch of other stuff - links and whatever may not work.</p> 2009-11-20T15:27:35Z 2 Forum 191814 39819 2009-11-20T15:27:35Z Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5 39581