function input_check() {
	var name = document.getElementById('form_name');
	var email = document.getElementById('form_email');
	var message = document.getElementById('form_message');
	var check = true;
	
	if (name.value == "" || name.value == " " || name.value == "  ") {
		check = false;
		alert('Please enter your name.');
		name.focus();
	}
	else if (email.value == "" || email.value == " " || email.value == "  ") {
		check = false;
		alert('Please enter your email address.');
		email.focus();
	}
	else if (message.value == "" || message.value == " " || message.value == "  ") {
		check = false;
		alert('Please enter your message.');
		message.focus();
	}
	return check;
	
}//function