I see it in the source however I cannot see it otherwise.Holding the left mouse button down on an absolutely positioned page element and hitting the DEL key will remove it if scripts are disabled (useful to forcibly kill in-page popups). This feature can be disabled by setting the noscript.eraseFloatingElements about:config preference to false.
I might or might not have had scripts on noscript.net as allowed. Eitherway, it would be nice to know what to modify in order to mess with those settings/lists/etc.