function update() {
  if (request.readyState == 4) {
    if (request.status == 200) {
      /* Get the response from the server */
      var response = request.responseText;
      var array = response.split("|");
      var alertNumber = array[0];
      var alertText = array[1];
      if (alertNumber == "1") {
      window.location = "new_music_night_weboffer_thanks.php";
      } else if (alertNumber == "2") {
      alert(alertText);
      document.getElementById("continue").innerHTML = "<a class=\"button\" title=\"submit\" href=\"javascript:process();\">submit</a>";
      } else {
      var required = array[2].split("~");
      for (i=0; i < required.length; i++) {
      var name = required[i];
      document.getElementById(name).className = "input_missing";
      }
      alert(alertText);
      document.getElementById("continue").innerHTML="<a class=\"button\" title=\"submit\" href=\"javascript:process();\">submit</a>";
      }
     } else {
      alert("Error! Request status is " + request.status);
    }
  }
}

function process() {
   document.getElementById("continue").innerHTML = "<span class=\"button\">submit</span>";
   var name = document.getElementById("name").value;
   var email = document.getElementById("email").value;
   var past_attendance = document.getElementById("past_attendance").value;
   var zip = document.getElementById("zip").value;
   var age = document.getElementById("age").value;
   var gender = document.getElementById("gender").value;
   var marital_status = document.getElementById("marital_status").value;
   var cell_number = document.getElementById("cell_number").value;
   var heard_about = document.getElementById("heard_about").value;
   var friend_email1 = document.getElementById("friend_email1").value;
   var friend_email2 = document.getElementById("friend_email2").value;
   var friend_email3 = document.getElementById("friend_email3").value;
   var friend_email4 = document.getElementById("friend_email4").value;
   var friend_email5 = document.getElementById("friend_email5").value;
   var url = "new_music_night_weboffer_do.php";
   request.open("POST", url, true);
   request.onreadystatechange = update;
   request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
   request.send("name=" + escape(name) + "&email=" + escape(email) + "&past_attendance=" + escape(past_attendance) + "&zip=" + escape(zip) + "&age=" + escape(age) + "&gender=" + escape(gender) + "&marital_status=" + escape(marital_status) + "&cell_number=" + escape(cell_number) + "&heard_about=" + escape(heard_about) + "&friend_email1=" + escape(friend_email1) + "&friend_email2=" + escape(friend_email2) + "&friend_email3=" + escape(friend_email3) + "&friend_email4=" + escape(friend_email4) + "&friend_email5=" + escape(friend_email5));                       
}