I understand the basics of javascript injection. However, I can not get it to work in Firefox. I was trying to use it on a basic mission. When I enter javascript:(DELETED TO AVOID SPOILER) it does nothing.
I know the script I am trying to use is correct, as I switched over to Internet Explorer and it worked perfectly.
Even if I use javascript:alert(testing); I get nothing with Firefox, but works fine with Internet Explorer.
Any Ideas?
ALSO;
I installed firebug but that didn't help either.



