pop up dialog window

[jonsof]

I want to tell me a way to create a pop up window which cannot be closed be the user except to press yes or no.

I want it in order to determinated if a file upload form will be shown in a form or not.

For example the pop up will say

Would you like to upload an image?
If user press yes, then an upload form will be created among others which are being created statically.

Is that possible?

[eriksmoen]

.
This is a PHP forum, not javascript... but to point you to what your looking for, follow this link. (it's an ASP page, but hey... if yours in non-PHP related, why should mine?):p