var filter=/^(\w+(?:\.\w+)*)@((?:\w+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
var account;

$('email').focus();

$('email').onkeyup = function() {
		var x = new Ajax.Request(
			'/scripts/ajax.passwordlost.emailwithaccount.php?email='+$('email').value,
			{ onComplete:showResponse }
		);
	}
var showResponse = function(r) {
	account = r.responseText!=1;
	$('form_passwordlost_submit').disabled = !(filter.test( $('email').value ) && account);
	$('msg_emailunregistered').innerHTML = account ? ' ' : 'Please specify your registered e-mail-address.';
}