problem on causeValidation property on dialog form

[eitan]

Hello,

I have a dialog form (called by window.showModalDialog).
The dialog is an aspx page.

When I set causeValidation = true (default),
when I do the validation (is it for fields like summaryValidation etc...),
another page is seen which is not a web-dialog, but a simple aspx page,
shows by ie-.browser

What's wrong ?

Thanks ...