Here ya all go, this will check yo see if the user filled in a valid 
email address in the Contact Info section, if they did not fill it in corectly
a popup box will come up and notify the user.

Make the following your biggining form statement:

<form method="post" action="{{CGI}}" name="form" onSubmit="return validate()">



Put the following at the very end of the form, within the form tag

<SCRIPT LANGUAGE="JavaScript">
<!-- 
function validate() { 
missinginfo = ""
if (document.form.owner_email.value == "")  
missinginfo += "owner_email \n ";
if (document.form.owner_email.value.indexOf("<") != -1)
missinginfo += "owner_email  \n ";
if ((document.form.owner_email.value.indexOf("@") == -1) || (document.form.owner_email.value.indexOf(".") == -1 ) )
missinginfo += "owner_email  \n ";
if (missinginfo != "") { 
   missinginfo =  "You did not enter a valid email address under Contact Information:  \n" + 
  " " + 
  "\nPlease re-enter and submit again."; 
  alert(missinginfo); 
  return false; 
} 
else return true; 
}
//   -->
</SCRIPT>