Obsolete since Gecko 28 (Firefox 28 / Thunderbird 28 / SeaMonkey 2.25 / Firefox OS 1.3)
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
MozBeforeResize event is executed before a browser
window is resized.
- Mozilla specific
- Default Action