var xmlHttp = null;
function add_newsletter()
{
	xmlHttp = createObject();

	if (xmlHttp == null)
	{
		alert("Your browser not support AJAX");
		return;
	}
	
	var email = document.getElementById("email").value;
	
	url = "newsletter.php?email=" + email;
	//alert("Url is : " + url);
	xmlHttp.onreadystatechange = a_email;
	xmlHttp.open("POST",url,true);
	xmlHttp.send(null);	
}
function a_email()
{
	//alert(xmlHttp.readyState);
	if (xmlHttp.readyState == 4 )
	{
			if (xmlHttp.responseText)
				{	
					document.getElementById("error_msg").innerHTML = xmlHttp.responseText;
					document.newsletter.email.value = "";
				}
	}
	/*
	else
	{
			msg = "<table width='100%' border='0' align='center' cellpadding='10' cellspacing='0'>";
			msg = msg + "<tr><td hight='50' align='center' valign='middle'><img src='../images/ajax.gif' border='0'></td></tr></table>";
			
			document.getElementById("error_msg").innerHTML = msg;
	}
	*/
}
function createObject()
{
	var xmlHttp;
	try
	{
		xmlHttp = new XMLHttpRequest();
	}
	catch(e)
	{
		try
		{
		xmlHttp =new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e)
		{
			xmlHttp =new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}