In onAddonSelect(), verify that something really is selected.
In onAddonSelect(), verify that something really is selected.

the8472/greasemonkey,HasClass0/greasemonkey,Ventero/greasemonkey,Ventero/greasemonkey,HasClass0/greasemonkey,the8472/greasemonkey,Martii/greasemonkey,Martii/greasemonkey