function validateFields(frm) {
	if (!frm.fname.value) {
		alert ("Please enter your first name."); 
		frm.fname.focus(); 
		return false;
	}
	
	else if (!frm.lname.value) {
		alert ("Please enter your last name."); 
		frm.lname.focus(); 
		return false;
	}
	
	else if (!frm.email.value) {
		alert ("Please enter your email address."); 
		frm.email.focus(); 
		return false;
	}
	
	else if (!frm.user1.value) {
		alert ("Please enter your zip/postcode."); 
		frm.user1.focus(); 
		return false;
	}
	
	else if (!frm.user2.value) {
		alert ("Please enter your ticket number or cinema."); 
		frm.user2.focus(); 
		return false;
	}
	
	return true;
}