Type: script code

Specifies a set of script to execute when the browser window is closed by the user. This code is used by some programmers to annoyingly pop up alert boxes preventing the users from leaving the page.

Closing the window calls this eventhandler on the prefwindow.

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Contributors to this page: blacpans, SphinxKnight, vipsh18, rolfedh, jan-kiszka
Last updated by: blacpans,