How do I tell Firefox "do not load any iFrames on www.example.com" ? For example, http://www.freestockcharts.com (requires SilverLight) loads an iFrame on the right side filled with advertisements. I want to completely remove that iFrame so that the stock charts fill the entire width of the page. I have tried plug-ins such as BlockAd Plus and, its assistant, Element Hiding Helper. They will remove the ads but not the entire iFrame. Thank you =)