[whatwg] Can we deprecate alert(), confirm(), prompt() ?

[Biju]

On Thu, Nov 25, 2010 at 8:45 AM, Markus Ernst
> Maybe, instead of your original suggestion, it might be worth thinking about
> making alert()/confirm()/prompt() dialogs styleable via CSS? Then those
> fancy JS lib dialogs would get obsolete, and we had the favour of both nice
> look and support for the special purposes of those dialogs.

The request I put is NOT about whether you can make it PRETTY looking or not.
The question is about why we are allowing website have something which is MODAL
(ie, both window modal and tab modal
  https://bugzilla.mozilla.org/show_bug.cgi?id=59314)
In my opinion a no website should have that much control  over user interaction.