"restart browser" sometimes not shown using FF 3.0

We don't want to "Always" promot the user to restart the FF 3.0 browser when installing Java.
In some cases, when no applet plugin has been loaded, and no javascript has executed :
navigator.plugins.refresh(false);
accessing an applet after a new jre is installed will either not fiund java at all or find the old one.

For this reason it is important that all our pages contain the above line of javascript.

DeployJava has this, and we need it also in java.com and java.sun.com, and any plugin examples that do not use the toolkit.