function ajax(a,b) {

var req;
var parseData = b;
var c; 

if (window.XMLHttpRequest) 
	{ 
  		req = new XMLHttpRequest() 
	} else if (window.ActiveXObject)
		{ 
			req = new ActiveXObject("Microsoft.XMLHTTP")
		} try 
			{ 
				req.overrideMimeType('text/html');
				req.open(a, parseData, false) 
				req.send('') 
				c = req.responseText;
				if (req.readyState == 4){
				return c; 
				} 
			} 
		catch (e) { 
		alert(e); 
		} 
	}

function signup(){
var output
output=ajax('POST', 'suscribe.php?email='+document.getElementById('email').value);
document.getElementById('nMessage').innerHTML=output;


}