var objXMLHttp;
function subscribe(str) {
	var regEx = /^[\w\.\+-]{1,}\@([\da-zA-Z-]{1,}\.){1,}[\da-zA-Z-]{2,6}$/;
	if (!regEx.test(str)) {
		document.getElementById('nlmsg').innerHTML = '<font class="red">Invalid email</font>';
		//alert('Invalid email!');
		//return false;
		return;
	}
	objXMLHttp=createXmlHttpObject();

	if (objXMLHttp==null) {
		alert ('Your browser does not support the XMLHttpRequest object!');
		return;
	}

	var url='../dosubscribe.php?eml=' + str + '&sid=' + Math.random(); // prevent caching
	objXMLHttp.onreadystatechange = stateChanged;
	objXMLHttp.open('GET',url,true); // GET method
	objXMLHttp.send(null); // always use null for GET method
}
  
function createXmlHttpObject()	{
	var req = null;
	try {
		req = new XMLHttpRequest(); //ie7, ff, safari
	}
	catch (e) {
		try {
			req = new ActiveXObject("Msxml2.XMLHTTP"); //later ie
		}
		catch (e) {
			try {
				req = new ActiveXObject("Microsoft.XMLHTTP"); // earlier ie
			}
			catch (e) {
				// could not create XMLHttpRequest object
				return false;
			}
		}
	}
	return req;
}

function stateChanged()	{
	if (objXMLHttp.readyState == 0)  {
		document.getElementById("nlmsg").innerHTML = "<img src='images/processing.gif' width='15' height='15' align='texttop'>"; //uninitialized
	}
	else if(objXMLHttp.readyState == 1)  {
		document.getElementById("nlmsg").innerHTML = "<img src='images/processing.gif' width='15' height='15' align='texttop'>"; //loading
	}
	else if(objXMLHttp.readyState == 2)  {
		document.getElementById("nlmsg").innerHTML = "<img src='images/processing.gif' width='15' height='15' align='texttop'>"; //loaded
	}
	else if(objXMLHttp.readyState == 3)  {
		document.getElementById("nlmsg").innerHTML = "<img src='images/processing.gif' width='15' height='15' align='texttop'>"; //interactive
	}
	else if (objXMLHttp.readyState == 4 || objXMLHttp.readyState == "complete") {
		document.getElementById("nlmsg").innerHTML=objXMLHttp.responseText // completed
		if(document.getElementById("nlmsg").innerHTML == "Error sending newsletter, try later")	{
			document.getElementById("nlmsg").className = "red";
		}
		else	{
			document.getElementById("nlmsg").className = "green";
		}
	}
}