function age_js() {
	now     = new Date();
	now_y   = now.getFullYear();
	now_m   = now.getMonth()+1;
	now_d   = now.getDate();
	birth_y = eval(document.entry.year.value);
	birth_m = eval(document.entry.month.value);
	birth_d = eval(document.entry.day.value);

	if ( birth_y == null || birth_m == null || birth_d == null ) {
		//exit;
		return false;
	}
	if (birth_y < 100) { birth_y = 1925 + birth_y; }
	age = now_y - birth_y;
	if ( (now_m < birth_m) || ( now_m == birth_m && now_d < birth_d ) ) { age = age - 1; }
	document.entry.age.value = eval(age);
}