function form_check () {
	var frm = document.getElementById('book_appointment');
	if (frm.name.value == '') {
		alert ('Please, enter your name!');
		frm.name.focus();
		return false;
	}
	if (frm.email.value == '') {
		alert ('Please, enter your email!');
		frm.email.focus();
		return false;
	}
	if (frm.postcode.value == '') {
		alert ('Please, enter your postcode!');
		frm.postcode.focus();
		return false;
	}
	if (frm.DOB.value == '') {
		alert ('Please, enter your date of birth!');
		frm.DOB.focus();
		return false;
	}
	/*if (!(/^([1-9]|[1-2][0-9]|30|31)\/([1-9]|10|11|12)\/(20[0-9]{2}|19[0-9]{2})$/.test(frm.DOB.value))) {
		alert ('Invalid date of birth. It must be in the form month/day/year');
		frm.DOB.focus();
		return false;
	}*/
	if (frm.agree.checked == false) {
		alert ('You must accept our privacy policy!');
		frm.agree.focus();
		return false;
	}
	return true;
}