You Can Block Scripts Using Firefox Addon

The Internet is full of threats like cross-site scripting attacks and clickjacking. More attacks being injected in the form of scripts in web pages that you don't even know are there. You can give yourself a modicum more protection by running a Firefox plug-in called NoScript. NoScript blocks all scripts from running until you authorize them.

Go to addons.mozilla.org and search for NoScript. Intsall it like you would any add-on. Once you have it installed, look in the bottom right corner at the little S with the cross-out symbol. Clicking on it brings up a sub-menu that allows you to choose how to handle scripts on the page. It is not safe to allow scripts to run. Otherwise, you will be victim to the code. Still you want to run scripts go ahead with good knowledge.

But some sites won't work without scripts so, the next safest thing is to Temporarily allow only the scripts you need and or trust. A slightly less safe method is to temporarily allow all on a page.

The next more convenient level, but also next less safe is to permanently allow scripts either individually or all for a page. This becomes necessary for things like your Bank's website or Google Docs where you don't want to constantly allow scripts every time you launch your browser. If you permanently allow scripts from a site, you're putting your trust in that site that it will never allow itself to be infected by a malicious script.

The worst thing you can do is globally allow all scripts. If you have changed your mind to dispose running scripts you can block them again.