Popup boxes are the most useful way of showing a warning or any other important information to the website visitors in many HTML5 templates. All you need to do is change the value of the This info aims to help you understand the above code, which consists mainly of HTML tags (or The form tags contain other tags nested within them.
Edit: As Mulletfingers999 points out in a comment, jQuery Alert Dialogs have been deprecated in favor of jQuery UI dialogs. All you need to do is change the value of the action attribute to a script that processes the form and sends you an email. JavaScript provides different built-in functions to display popup messages for different purposes e.g. There you can also show a "modal" dialog, that dialog can have arbitrary content however - meaning that a