After you install TargetAlert, you can use the TargetAlert Options
dialog to choose which alerts you would like to enable.
To bring up the dialog in Firefox, go to the Tools menu
and select Extensions. In the window that opens,
scroll until you find the listing for TargetAlert
and click on the options button.
(This is the standard way to open the options dialog for any Firefox extension.)
To bring up the dialog in Mozilla, go to the Tools menu
and select TargetAlert Options.
As you can see, each of the alerts may be turned on individually.
This dialog is non-modal, so you can leave it open and change
your TargetAlert preferences as you browse, if you like.