Restrict user email on registration

[grynmoors]

OK here's another thought. I would still like to see an alert box since most peeps have their java turned on (don't they need it on for vShare to work? I'll have to check that....) [EDIT: They need it if they want to be able to post comments]

It was brought to my attention that using Java would make bypassing the check easy if a person has it turned off...so....how about including something that if their java is turned off, they will still see the message...something along these lines which I found at dynamic drive forums (this is for when the email is already taken, but it gives you an idea of what I'm talking about):

?> 
  <script type="text/javascript"> 
    alert("The email address <?php echo $_POST['email']; ?> is already registered."); 
    history.back(); 
  </script> 
<?php 
//THIS CODE IS UNCOMMENTED 
//So that people without JS can still see the message. 
        die("The email address '" . $_POST['email'] ."' is already registered"); 
//END 
        //print '<script type="text/javascript">'; 
        //print 'alert("The email address ' . $_POST['email'] .' is already registered")'; 
        //print '</script>'; 

    }