// JavaScript Document
// JavaScript Document
var xmlhttp;
function addSubscriber()
{
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
	{
	alert ("Browser does not support HTTP Request");
	return;
	}
	
	if(document.getElementById("email").value=="" || document.getElementById("email").value=='Enter your email !')
		{
			document.getElementById("errMsgTr").style.display='';
			document.getElementById("errMsgTr").innerHTML = 'Please enter your email address';
			document.getElementById("email").focus();
			
			return false;
		}
	if(document.getElementById("email").value!="" && document.getElementById("email").value!='Enter your email !')
	{
		var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
		var address = document.getElementById("email").value;
		if(reg.test(address) == false) 
		{
		document.getElementById("errMsgTr").style.display='';
		document.getElementById("errMsgTr").innerHTML = 'Invalid Email Address';
		document.getElementById("email").focus();
		return false;
		}
	}
	var url="goToAddSubscriber.php";
	url=url+"?email="+document.getElementById("email").value;
	url=url+"&sid="+Math.random();
	
	
	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function stateChanged()
{
	if (xmlhttp.readyState==4)
	{
		 if(xmlhttp.responseText==1)
		 {
			 	
			 document.getElementById("trSubscribe").style.display='none';
			 document.getElementById("errMsgTr").style.display='';
		     document.getElementById("errMsgTr").innerHTML = 'Subscribe successfully';
		 }
		 else
		 {
			 document.getElementById("trSubscribe").style.display='';
			 document.getElementById("errMsgTr").style.display='';
		     document.getElementById("errMsgTr").innerHTML = xmlhttp.responseText;
		 }
	}
}

function GetXmlHttpObject()
{
	if (window.XMLHttpRequest)
	  {
	  // code for IE7+, Firefox, Chrome, Opera, Safari
	  return new XMLHttpRequest();
	  }
	if (window.ActiveXObject)
	  {
	  // code for IE6, IE5
	  return new ActiveXObject("Microsoft.XMLHTTP");
	  }
	return null;
}