function nav(pageID){
	$.post('index.php?pageID=' + pageID, {
			funcid:2 
		}, 
		function(response){
			$('#page').fadeToggle(200, function(){
				$('#page').html(response).fadeIn(300);
			});
		}
	);
}

function checkEmail(ev){
	maxLength=50;
	if (ev.length > maxLength) {
		alert('This Email Address is too long.');
		return false;
	}

	var validformat=/^[_A-Za-z0-9-]+(\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\.[A-Za-z0-9-]+)*(\.[A-Za-z]{2,3})$/;

	if(!validformat.test(ev)) {
		alert(ev + ' is not a valid email address.');
		return false;
	}

	return true;
}