function doSubmitEmail(){
  var xmlhttp;

  if (window.XMLHttpRequest){
    // code for IE7+, Firefox, Chrome, Opera, Safari
    xmlhttp=new XMLHttpRequest();
  } else if (window.ActiveXObject){
    // code for IE6, IE5
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  } else {
    alert("Your browser does not support XMLHTTP!");
  }
  
  xmlhttp.onreadystatechange=function(){

    //alert("readystate = "+xmlhttp.readyState);

    if(xmlhttp.readyState==4){
      //document.getElementById("email").value = "";
      //document.getElementById("formEmail").innerHTML = "<font size=2 color=#666666><b>Your email has been submitted!</b></font>";
    }
  }

  var strURL = "src/doSubmitEmail.php";
  var params = "";
  params += "e="+document.getElementById("email").value;

  xmlhttp.open("POST",strURL,true);
  
  //Send the proper header information along with the request
  xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  xmlhttp.setRequestHeader("Content-length", params.length);
  xmlhttp.setRequestHeader("Connection", "close");
  
  xmlhttp.send(params);
  
  document.getElementById("email").value = "";
  document.getElementById("formEmail").innerHTML = "<font size=2 color=#666666><b>Your email has been submitted!</b></font>";
}

function chkEmail(){
  var bool = 'FALSE';
  var str = "<font size=2 color=#666666><b>Enter a valid email address</b></font>";
  
  var email = document.getElementById("email").value;
  email = email.split(" ").join("");
  
  if( email.indexOf("@") > -1 ){
    var arr = email.split("@");
    if( arr[0].split("").length > 0 && arr[1].split("").length > 0 ){
      if( arr[1].indexOf(".") > -1 ){
        if( arr[1].split(".")[0].split("").length > 0 ){
          if( arr[1].split(".")[1].split("").length == 3 ){
            bool = 'TRUE';
          }
        }
      }
    }
  }
  
  if( bool == 'TRUE' ){
    str = "<font size=2><b><a href='javascript:doSubmitEmail();' class='submit'>Click to Submit Email</a></b></font>";
  }

  document.getElementById("emailMsg").innerHTML = str;
}