Highlights of Mozilla Firefox 17.0 include click-to-play blocklisting, in order to stop any malicious plugins from running without the user’s permission; Awesome Bar now features larger icons for a better experience; JavaScript Sets and Maps were made iterable; implemented SVG StrokePaint and FillPaint; easier-to-use Web Developer tools, such as Developer Toolbar, Web Console and Debugger; easy editing of DOM, thanks to the new Markup panel from the Page Inspector; implemented Sandbox attribute for iframes, for better security; New Tab page improvements; over 20 other small improvements!