function centeredWindow(pageURL, title,w,h) {
	var left = (screen.width/2)-(w/2);
	var top = (screen.height/2)-(h/2);
	var targetWin = window.open (pageURL, title, 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no, copyhistory=no, width='+w+', height='+h+', top='+top+', left='+left);
}

function checkemail() {
	var string = document.getElementById("mailing-list-email").value;
	var valid = string.match(/^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.(?:[A-Z]{2}|com|org|net|edu|gov|mil|biz|info|mobi|name|aero|asia|jobs|museum)$/gi);
	if (!valid) {
		alert('Please enter a valid e-mail address!');
		return false;
	}
	return true;
}