validate_feedback_form = function(oForm) {
	var req = {
		"names": "Enter Your name!",
		"email": "Enter your e-mail!",
		"body": "Enter Your feedback message!"
	};
	for (var fieldname in req) {
		if (!oForm.elements[fieldname].value.length) {
			alert(req[fieldname]);
			oForm.elements[fieldname].focus();
			return false;
		}
	}
	return true;
};