This plugin gives you an options to make all password fields on your blog to show a tooltip message if user keyboard's CAPS lock is on.
You can enable or disable this plugin just by setting 'Enabled' under Settings > JCWP Scroll To Top > Enabled to "No"
You can follow me on Twitter
https://twitter.com/jschahal or
like my facebook page
http://www.facebook.com/jaspreetchahal.org to get updates on some not so exciting things that I do.
Visit my site
http://jaspreetchahal.org to get help on this plugin or more precisely go to
http://jaspreetchahal.org/wordpress-caps-lock-detection-plugin-for-login-password-fields