How can I show a message in the Firefox message bar (you know, the yellow one that also says when it's blocked a popup) using JS ? I've seen some sites do this but I can't remember which.
Thanks.
How can I show a message in the Firefox message bar (you know, the yellow one that also says when it's blocked a popup) using JS ? I've seen some sites do this but I can't remember which.
Thanks.
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