EMC2 Alert Boxes make a great way to notify your visitors of anything!
EMC2 Alert Boxes will work straight out of the box. Everything is configured from the shortcode or jQuery call! Post in the forums if you want to see a feature added.
If you are editing with the TinyMCE WYSIWYG interface, you will notice an orange triangle icon appear. This is a quick-build shortcode generator in case you forget exactly