function init() {
	
	$('#age').focus(function() {
		$(this).attr('title', $(this).val());
		$(this).val('19');
	});
	$('#age').blur(function() {
		if ($(this).val() == '19') {
			$(this).val($(this).attr('title'));
		}
	});
	
	
	$('#age_check_form').submit(function() {
		var year = new Date().getYear() + 1900;
		var birth_year = $('#age').val();
		
		var ok = true;
		if (birth_year == '' || birth_year == '19' || birth_year == 'Enter your birth date') {
			alert('Enter your birthyear');
			ok = false;
		}
		if(ok && parseInt(birth_year) + 18 > year) {
			alert('You must be 18 to access the site');
			ok = false;
		}
		if (!ok) {
			$('#age').focus();
		}
		return ok;
	});
}

$(document).ready(init);