:master:

Ho messo:
element.onclick = function() { alert ( "fai_qualcosa" ); }
ma mi da:

Errore: uncaught exception: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIDOMWindowInternal.alert]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: http://localhost/........ :: anonymous :: line 28" data: no]