Banner Doesn't Resize Automatically

This plug in is awesome! Thanks very much for putting it out there 😉

I’ve got the banner working, but they don’t resize automatically when people use different resolutions or resize their browser. Am I missing something?

Code is directly in header.php and I think I lifted it from the support posts here, and then just changed the file names as appropriate.

<center>
<?php jsbrotate( 'images=http://domain.com/wp-content/uploads/2014/01/II-web-banner-940px-0114-v2-11.jpg|http://domain.com/wp-content/uploads/2014/01/II-web-banner-940px-0114-v2-12.jpg|http://domain.com/wp-content/uploads/2014/01/II-web-banner-940px-0114-v2-10.jpg|http://domain.com/wp-content/uploads/2014/01/II-web-banner-940px-0114-v2-9.jpg|http://domain.com/wp-content/uploads/2014/01/II-web-banner-940px-0114-v2-8.jpg|http://domain.com/wp-content/uploads/2014/01/II-web-banner-940px-0114-v2-7.jpg&height=186&width=940' ); ?>
</center>

http://ww.wp.xz.cn/plugins/js-banner-rotate/