Question

Possible Duplicate:
How can I override the OnBeforeUnload dialog and replace it with my own?

Is there a chance to show custom popup (div) when user leave page?
I know there are beforeunload event, but it only show default popup. I need an custom popup with form inside it.

Answer 1

The short answer is no.

You will only be able to display the default popup that the browser provides. It is not possible to display a custom popup such as a <div> as you are requesting, because by the time it is displayed the tab or window would have already closed.

To display a default popup confirm box before the user leaves the page, you should use the following JavaScript code:

window.onbeforeunload = function(e) {
    return 'Are you sure you wish to leave this page?';
};