onbeforeprint (HTML attribute)
DescriptionThis event fires just after the user has requested a print operation (via menu or keyboard shortcut) but before the print-out actually takes place; it also occurs when the user requests a print preview.
No fixed value - could be a call
to one or more defined functions or a simple
Non-standard event defined by Microsoft for use in Internet Explorer. May work in some other browsers but cannot be reliably used. Compatibility for this non-standard attribute not tested.