// JavaScript Document
function ajaxform(thisform,formhandler)
{
    //General Purpose Ajax form submitter.
    //Written by Carl(bag) @ Thybag.co.uk
    if(!validateEmail(thisform, 'email'))
    {
      return false;
    }
    
    // Set up data variable
    var formdata = "";

    // Set up Ajax request variable
    try {xmlhttp = window.XMLHttpRequest?new XMLHttpRequest(): new ActiveXObject("Microsoft.XMLHTTP");}  catch (e) { alert("Error: Could not load page.");}

    // Loop through form fields
    for (i=0; i < thisform.length; i++)
    {
         //Build Send String
         if(thisform.elements[i].type == "text"){ //Handle Textbox's
                  formdata = formdata + thisform.elements[i].name + "=" + escape(thisform.elements[i].value) + "&";
         }else if(thisform.elements[i].type == "textarea"){ //Handle textareas
                  formdata = formdata + thisform.elements[i].name + "=" + escape(thisform.elements[i].value) + "&";
         }else if(thisform.elements[i].type == "checkbox"){ //Handle checkbox's
                 formdata = formdata + thisform.elements[i].name + "=" + thisform.elements[i].checked + "&";
         }else if(thisform.elements[i].type == "radio"){ //Handle Radio buttons
                  if(thisform.elements[i].checked==true){
                     formdata = formdata + thisform.elements[i].name + "=" + thisform.elements[i].value + "&";
                  }
         }else{
                  //finally, this should theoretically this is a select box.
                  formdata = formdata + thisform.elements[i].name + "=" + escape(thisform.elements[i].value) + "&";
         }
    }
    formdata = formdata + "ajax=true";
    //Send Ajax Request
    xmlhttp.onreadystatechange = function(){
               //Check page is completed and there were no problems.
               if ((xmlhttp.readyState == 4) && (xmlhttp.status == 200)) {
                      //What to do once the form is submitted - to inform the user.
                      document.getElementById("formOutter").innerHTML = xmlhttp.responseText;
               }
    }
    //Make connection
    xmlhttp.open("POST", formhandler);
    //Set Headers
    xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    //Send data
    xmlhttp.send(formdata);
    //stops form from submitting normally
    return false;
}

function validateEmail(thisForm,email) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = thisForm.elements[email].value;
   if(reg.test(address) == false) {
      alert('Invalid Email Address');
      return false;
   }
   return true;
}