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 = alertText;
      } else if (alertNumber == "2") {
      alert(alertText);
      document.getElementById("continue").disabled=false;
      } else {
      var required = array[2].split("~");
      for (i=0; i < required.length; i++) {
      var name = required[i]+"_label";
      document.getElementById(name).className="label_red";
      }
      alert(alertText);
      document.getElementById("continue").disabled=false;
      }
     } else {
      alert("Error! Request status is " + request.status);
    }
  }
}

function process() {
   document.getElementById("continue").disabled=true;
   var label_string = "first_name~last_name~email~telephone";
   var labels = label_string.split("~");
   for (i=0; i < labels.length; i++) {
      var name = labels[i]+"_label";
      document.getElementById(name).className="label";
   }
   var first_name = document.getElementById("first_name").value;
   var last_name = document.getElementById("last_name").value;
   var email = document.getElementById("email").value;
   var telephone = document.getElementById("telephone").value;
   var address_1 = document.getElementById("address_1").value;
   var address_2 = document.getElementById("address_2").value;
   var city = document.getElementById("city").value;
   var state = document.getElementById("state").value;
   var zip = document.getElementById("zip").value;
   if (document.getElementById("investors_kit").checked == true) {
      var investors_kit = "Yes";
   } else {
      var investors_kit = "No";
   }
   var comments = document.getElementById("comments").value;
   var url = "contact_do.php";
   request.open("POST", url, true);
   request.onreadystatechange = update;
   request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
   request.send("first_name=" + escape(first_name) + "&last_name=" + escape(last_name) + "&email=" + escape(email) + "&telephone=" + escape(telephone) + "&address_1=" + escape(address_1) + "&address_2=" + escape(address_2) + "&city=" + escape(city) + "&state=" + escape(state) + "&zip=" + escape(zip)  + "&investors_kit=" + escape(investors_kit) + "&comments=" + escape(comments));        
}