gistfile1.js

$("#submit").click(function() {
   var email = $("input#email").val();
   var message = $("textarea#content").val();
   var dataString = 'email=' + email + '&message=' + message;
   $.ajax({
       type: "POST",
      url: "sendmail.php",
      data: dataString,
      success: function() {
         $('#contact_form').html("<div id='message'></div>");
         $('#message').html("<h1>Epost sendt!</h2>")
             .append("<img id='checkmark' src='images/check.png' />")
             .append("<p>Vi vil ta kontakt med deg så snart vi kan!</p>");
         }
      });
   return false;
});