Extra caution is recommended when installing recently uploaded/updated scripts (read more)
Be sure you trust any scripts you install
body_onclick_block
Blocks the body.onclick event. Some web-pages use this to circumvent the popup blocker built in to Firefox.
Blocks the body.onclick event. Some web-pages use this to circumvent the popup blocker built in to Firefox.
You could comment on this script if you were logged in.

login to vote
Some web-sites also use onchange event and triggers it in order to cause a popup to appear. Go to about:config and disable onchange for popups appearing.