[Plugin: Invisible Captcha] xhtml errors

I get some errors when validating my XHTML when activating the plugin.

<input type='hidden' name='invisible_cap2tcha_s' id='invisible_cap2tcha_s'>

element is not closed : please end with />

<script>
type not specified : please use
<script type='text/javascript'>

Keep up the good work. The plugin works great.

https://www.ads-software.com/extend/plugins/invisible-captcha/