/* ajax function send and receives email addresses to server */
function sendEmail(){ 
		var xhro;
		var url = "lib/email_validator.php?email="
		if(window.XMLHttpRequest){
			xhro = new XMLHttpRequest;
		}
		else if(window.ActiveXObject){
			xhro = new ActiveXObject("Microsoft.XMLHTTP");
		}
		if(xhro){
			xhro.open('GET',url+document.newsletter.email.value,true);
			xhro.send(null);
			xhro.onreadystatechange=function(){
				if(xhro.readyState == 4){
					if(xhro.status == 200){
						var response = xhro.responseText;
            document.getElementById('email').value = '';
						if(parseInt(response) == 1){
							var thanks = 'Thank you! You are now subscribed to our newsletter';
							document.getElementById('callbackmsg').innerHTML = '<p>'+thanks+'</p>';
						}
						else{
							document.getElementById('callbackmsg').innerHTML = '<p class="error">'+response+'</p>';
						}
					}
				}
			}
		}
		else{
			return null;
		}
	}