function $frm(f) {

	return (document.getElementById(f).value);
}
function sendNewsLetter() {
	
	var xmlhttp;
	
	if (window.XMLHttpRequest) {
		xmlhttp=new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	}

	xmlhttp.open("POST", "newsletter.php" , false);
	xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	xmlhttp.send("newsletter_name=" + $frm('newsletter_name') + "&email=" + $frm('email') + "&newsletter_location=" + $frm('newsletter_location'));
	
}