Select Preferences from the Firefox menu. In the pop-up window, click the Content icon. Check the Enable JavaScript check box. Close the window. To enable JavaScript in Safari (MAC): ...

Select the "Enable JavaScript" check box to allow scripts on Web pages in Firefox. Click "OK" to save the new settings and close the Options window.

Mozilla is leveraging an impressive new optimization technique to bring a big performance boost to the Firefox JavaScript engine. The code was merged today (but is not yet ready to be enabled by ...