This simple contact-form validates the user's data in the background at the same time the user is filling in the form by use of Ajax. After the user clicks the submit-button, the message is sent to you by e-mail in the background and the user gets a confirmation-message and confirmation-email without loading a new page (use of Ajax). All this can be installed very easily: just copy the html-code/javascript-code into your webpage and load both the webpage and the php-script into one folder on your webserver.