var http_request = false;
function makePOSTRequest(url, parameters) {
  http_request = false;
  if (window.XMLHttpRequest) { // Mozilla, Safari,...
	 http_request = new XMLHttpRequest();
	 if (http_request.overrideMimeType) {
		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.onreadystatechange = alertContents;
  http_request.open('POST', url, true);
  http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  http_request.setRequestHeader("Content-length", parameters.length);
  http_request.setRequestHeader("Connection", "close");
  http_request.send(parameters);
}

function alertContents() {
  if (http_request.readyState == 4) {
	 if (http_request.status == 200) {
		//alert(http_request.responseText);
		result = http_request.responseText;
		document.getElementById('SubscribeSpan').innerHTML = result;            
	 } else {
		alert('There was a problem with the request.');
	 }
  }
}

function get(obj) 
{
  var poststr = "email=" + encodeURI( document.getElementById("email").value );
  poststr += "&first_name=" + encodeURI( document.getElementById("first_name").value );
  poststr += "&last_name=" + encodeURI( document.getElementById("last_name").value );
  makePOSTRequest('subscribe.php', poststr);
}


function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("This is for our E-Newsletter signup, please enter a valid email address to proceed.")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("This is for our E-Newsletter signup, please enter a valid email address to proceed.")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("This is for our E-Newsletter signup, please enter a valid email address to proceed.")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("This is for our E-Newsletter signup, please enter a valid email address to proceed.")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("This is for our E-Newsletter signup, please enter a valid email address to proceed.")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("This is for our E-Newsletter signup, please enter a valid email address to proceed.")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("This is for our E-Newsletter signup, please enter a valid email address to proceed.")
		    return false
		 }

 		 return true					
	}

function ValidateForm(){
	var emailID=document.myform.email;
	var fnameID=document.myform.first_name;
	var lnameID=document.myform.last_name;

	if ((fnameID.value==null)||(fnameID.value=="")||(fnameID.value=="First Name")){
		alert("Please enter your First Name")
		fnameID.focus()
		return false
	}
	if ((lnameID.value==null)||(lnameID.value=="")||(lnameID.value=="Last Name")){
		alert("Please enter your Last Name")
		lnameID.focus()
		return false
	}
	if ((emailID.value==null)||(emailID.value=="")||(emailID.value=="Email Address")){
		alert("Please enter your Email Address")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
 }