function submit_form(form_id,e) {

  var form = document.getElementById(form_id);

  email_index = -1;
  phone_index = -1;
  contact_info = 0;
  errors=0;
  error_msg = "";
  for (i = 0; i < form.elements.length; i++) {
    elem = form.elements[i];
    if (elem.name == "Zip Code" || elem.name == "Name") {
      if (elem.value == "") {
       error_msg += "Please enter your "+elem.name+"<br />";
       errors++;
      }
    }
    if (elem.name == "Email" || elem.name == "Phone") {
      if (elem.value != "") {
        contact_info++;
      }
      if (elem.name == "Email") { email_index = i; }
      if (elem.name == "Phone") { phone_index = i; }
    }
  }
  if (contact_info == 0 && email_index != -1) {
    error_msg += "Please enter your Email Address"+"<br />";
    errors++;
  }
  if (errors == 0) {
    form.action = "/php/submit.php";
    form.submit();
  } else {
    dalert(error_msg);
    incomplete_submit(form_id);
    e.returnValue = false;
    return false;
  }
}

function incomplete_submit(form_id) {
  form = document.getElementById(form_id);
  var i;
  url = "/php/submit.php";
  parameters = "?";
  for (i = 0; i < form.elements.length; i++) {
    if (form.elements[i].type == "checkbox") {
      if (form.elements[i].checked) {
        parameters += escape(form.elements[i].name)+"="+escape(form.elements[i].value)+"&";
      }
    } else {
      parameters += escape(form.elements[i].name)+"="+escape(form.elements[i].value)+"&";
    }
  }
  makeRequest(url, parameters);
}

function makeRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
          // set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      http_request.open('GET', url + parameters, true);
      http_request.send(null);
}

function dalert(msg,func) {
  cont = document.getElementById("prompter");
  cont.innerHTML = "<div class='prompt'><a href='#' class='closer' onclick='kill_prompt()'> &times; </a><form action='javascript:"+func+"()'<div class='iprompt'><p>"+msg+"</p><input type='button' class='button' onclick='kill_prompt()' value='Ok' /></div></form></div>";

}

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