Physics 6720: How to tell your browser to accept old Javascript
Many web sites use Javascript to run small applications within your
browser. Because of security vulnerabilities with older versions of
Javascript, browsers require extra security features before running
them. Those features are provided by more recent versions of
Java. Older Javascript tools that do not use these security features
are now blocked from running in most browsers. So what do you do if
you need to use one of the older Javascript tools? The best solution
is to ask the authors of those scripts to update them with the latest
version of Java. The alternative is to unlock security.
It is always risky to punch holes through a security barrier. We do
it very cautiously and only with trusted sites. Here is how to do it
for selected URLs:
On our lab computers, run the Unix command
ControlPanel
You should get a window for setting Javascript preferences. (See the
figure.) Select the "Security" tab and click on "Edit Sites". Type in
the URL of the site that you trust, as shown. Click "OK".