function AddToNewsletter (nlemail)
{
	var msg = '';
	if (nlemail.length==0) 
	{
		msg += '- Πληκτρολογήστε το email σας\n';
	}
	else 
	{
		var re = new RegExp('^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$');
		if (!nlemail.match(re)) msg += '- Λάθος στο email\n';
	} //end if -email check 

	if (msg=='')
	{
		var xmlHttp;
		try {
			// Firefox, Opera 8.0+, Safari
				xmlHttp=new XMLHttpRequest();
			} catch (e) {
		// Internet Explorer
			try {
					xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
				} catch (e) {
				try {
						xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
					} catch (e) {
						//alert("Ο browser σας δεν υποστηρίζει AJAX!");
					return false;
					}
				}
			}
		
		xmlHttp.onreadystatechange=function()
		{
			//0	The request is not initialized
			//1	The request has been set up
			//2	The request has been sent
			//3	The request is in process
			//4	The request is complete
			if(xmlHttp.readyState==4)
			{
				aaa = xmlHttp.responseText;
				alert(aaa.substr(1, aaa.length-1));
				if (aaa.substr(0, 1)=='1') document.location.href='newsletter';
			}
		}
		var randomnumber=Math.floor(Math.random()*11);
		xmlHttp.open("GET","http://www.ecofinder.gr/wmt/addtonewsletter.ajax.php?nlemail="+nlemail+"&rndnum="+randomnumber, true);
		xmlHttp.send(null);
	} //end if - try to register user
	else
	{
		alert(msg);
	} //end else - error message
  return true;
}