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onpopupshowing

onpopupshowing
Type: script code
This event is sent to a popup just before it is opened. This handler is usually used to dynamically set the contents when the user requests to display it. Returning false from this event handler prevents the popup from appearing.

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 Contributors to this page: Sheppy, Marsf, Mgjbot, BenoitL, Dria
 Last updated by: Sheppy,