var xmlHttp


function addNewsLetter()
{ 
	xmlHttp=GetXmlHttpObject()
	
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return
	} 
			
		var url="ajax/newsletter.php"	
		var paramRequest =  "id="+document.getElementById("txtEmailAddress").value;
	//url=url+"&sid="+Math.random()
		xmlHttp.open("POST",url,true)
		xmlHttp.onreadystatechange=submitRequest  
		xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

		xmlHttp.send(paramRequest)
	

}



function submitRequest() 
{ 

	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		 var response = xmlHttp.responseText;
		  document.getElementById("txtEmailAddress").value = '';		 
		 document.getElementById("response").innerHTML = response;

	}
} 
 

function GetXmlHttpObject()
{ 
	var objXMLHttp=null
	if (window.XMLHttpRequest)
	{
		objXMLHttp=new XMLHttpRequest()
	}
	else if (window.ActiveXObject)
	{
		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
	}
	return objXMLHttp
}
	
	
	function checkemail(email)
	{
			if (!/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/.test(email))
			{
				return false;
			}
			else return true;
	}