$(function() {
	$('#signup_email').focus(function() {
		if($(this).val() == 'e-mail address')
			$(this).val('');
	});
	$('#signup_email').blur(function() {
		if($(this).val() == '')
			$(this).val('e-mail address');
	});
	$('#signup').submit(function() {
		if($('#signup_email').val() == 'e-mail address') {
			alert('Please enter your email address.');
			$('#signup_email').focus();
			return false;
		}
	});
});