asp.net mvc client side validation password field in firefox

Asp.net mvc 2 seems to not clear 开发者_开发百科a required validation error for a password field in firefox.

• in both firefox and chrome: submit the form client side validation works and it says 'password is required'

• In chrome, I add a value to the password field and the client error is cleared.

• In firefox,I add a value to the password field and the client error is NOT cleared.

When I change the code to render a textbox, both browsers work. i.e. <%= Html.PasswordFor(u => u.Password) %> from <%= Html.TextBoxFor(u => u.Password) %>

Is this a bug in MVC? OR am I missing something? Thanks in advance.

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update...

I couldn't replicate on a new form.. The issue was due to the jquery watermark plug in. I believe there is a bug in one of the two scripts (jquery watermark or Microsoft ajax validation) I was using this plugin for watermarks: http://updatepanel.net/2009/04/17/jquery-watermark-plugin/

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there was a conflict between http://updatepanel.net/2009/04/17/jquery-watermark-plugin/ and microsoft ajax validation.