window.addEvent('domready', function(){
		var emailfield,submitbtn;
		emailfield=$('mail');
		submitbtn=$('btnsubmit');
		submitbtn.addEvent('click', function(e) {
			e=new Event(e).stop();
			if ((emailfield.value!='email') && (emailfield.value.indexOf(".") > 2) && (emailfield.value.indexOf("@") > 0)) {
				registerNewsletter(emailfield.value);
			} else {
				alert('Gelieve een geldig emailadres op te geven');
			}
		});
		emailfield.addEvent('click', function(e) { 
			if (emailfield.value=='email')
				emailfield.select();
		});
		emailfield.addEvent('blur', function(e) { 
			if (emailfield.value!='email') {
				if (!(emailfield.value.indexOf(".") > 2) || !(emailfield.value.indexOf("@") > 0)) {
					alert('Gelieve een geldig emailadres op te geven');
				}
			}
		});
	});
	function registerNewsletter(address) {
		new Ajax('register_newsletter.asp?address='+address,{method:'get',onComplete:endRegister}).request();
	}
	function endRegister() {
		alert('Het ingegeven email adres is toegevoegd aan onze nieuwsbrief lijst.');
		$('mail').value='email';
	}