Can you explain why not on onsubmit() event?

Here is the list of IE events:
http://msdn.microsoft.com/workshop/author/dhtml/reference/events.asp

If your target browser is not IE, the onsubmit is the safest event to use...



>Hi All,
>
>Does anybody know if in javascript I can detect if any of several forms on a page are being submitted without specifying the form names or using the OnSubmit method in a form tag?
>
>???
>
>Any help is appreciated.
>
>Kind Regards,
>Tarran Walker