function submitEmail()
{
	var email = document.getElementById('email').value;
	if(echeck(email))
	{
		
		SendAjax('mailingList.php?email=' + email, showResult);
		
	}

}


function showResult(results)
{
	var mailingListContainer = document.getElementById('mailingList');
	mailingListContainer.innerHTML =  results;

}


function resetMailingList()
{
	SendAjax('inc/emailForm.php', showResult);
}



function SendAjax(url, callbackFunction) {
   if (window.XMLHttpRequest) {
      var request = new XMLHttpRequest();
   } else {
      var request = new ActiveXObject("Microsoft.XMLHTTP");
   }
 
   request.open("POST", url, true);
   request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); 
 
   request.onreadystatechange = function() {
      if (request.readyState == 4 && request.status == 200) {
         if (request.responseText) {
            callbackFunction(request.responseText);
         }
      }
   }

   request.send(null);
}

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("Invalid E-mail Address")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail Address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail Address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail Address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }

 		 return true					
	}