[Zope] Form Help

[Todd Loomis]

Hi all:

Problem: When a user submits a form I look in my database to if the email 
they enter has already been recorded. If so I want to redirect the back to 
the form with a inputs filled in informing them about the error. If the 
email has been added before recorded the data and show conformation. I can 
get the error to go back to the form and place inputs back in the form, 
however the form want submit if all is well:

This is the basic code:

<dtml-if submit>
<dtml-in duplicate> ##CHECK FOR DUP###
<dtml-if "email1==EMail">
<SCRIPT FOR=window EVENT=onload LANGUAGE="JScript">
         alert("The E-Mail address you entered is already in use, please 
provide another.");
</SCRIPT>
<dtml-var form>##PULL IN FORM FILL IN INPUTS WITH IF STATMENTS##
<dtml-else">
<dtml-call add>
<dtml-in userid>
<dtml-call status>
<p>Your registration request has been submitted for review.</p>
</dtml-in>
</dtml-if>
</dtml-in>
<dtml-else>
<dtml-var form>##PULL IN  BLANK FORM##
</dtml-if>

Can this be fixed or a different way.

Thanks,
Todd