>Hi everybody,
>
>I have a Registration page. It works fine in both IE and FireFox when I run it from one application (FCAdmin).
>
>When I move practically the same page to another application (FCFront) the Validators don't work anymore for some reason in FireFox 3.0. In other words, I type some info and the "Field is required" message is supposed to disappear, but it stays there. It works properly in IE7 (except that for some reason it doesn't want to refresh the referenced JavaScript file even after I closed the application and re-opened).
>
>Do you know what can be the problem here, why practically the same page works properly in IE & FireFox from one directory (application) and doesn't work anymore from another?
>
>It used to work in both, I think, but I tried to incorporate the latest changes into the FCFront (taken from FCAdmin).
>
>Thanks a lot in advance.

The problem is resolved. The answer is here http://forums.asp.net/p/1283702/2477547.aspx#2477547

There was a setting in web.config

<!--<xhtmlConformance mode="Legacy"/>-->

that caused this problem.