function check_order_search(){ 
	var fm = document.order_search_form;
	if (fm.order_num.value == ''){		
		alert("请输入訂單號碼.");
		fm.order_num.focus();
		return false;		
	}
	if (fm.order_name.value == ''){		
		alert("请输入真實姓名.");
		fm.order_name.focus();
		return false;		
	}
	if (fm.order_email.value == ''){		
		alert("请输入E-MAIL.");
		fm.order_email.focus();
		return false;		
	}
	var re = /^[0-9a-zA-Z\-\.\_]+@[0-9a-zA-Z\-]+\.[0-9a-zA-Z\-\.]+$/;
	if (!fm.order_email.value.match(re)){
		alert("E-mail地址格式不正確.");
		fm.order_email.focus();
		return false;
	}
	fm.submit();
}