<table>
<tr>
<td><?php echo __('Desired login:') ?></td><td>
- <input name="login">
+ <input name="login" required>
</td><td>
<input type="submit" value="<?php echo __('Check availability') ?>" onclick='return checkUsername()'>
</td></tr>
<tr><td><?php echo __('Email:') ?></td><td>
- <input name="email">
+ <input name="email" type="email" required>
</td></tr>
<tr><td><?php echo __('How much is two plus two:') ?></td><td>
- <input name="turing_test"></td></tr>
+ <input name="turing_test" required></td></tr>
<tr><td colspan="2" align="right">
<input type="submit" name="sub_btn" value="<?php echo __('Submit registration') ?>"
disabled="disabled" onclick='return validateRegForm()'>