function check(obj){
	if(obj.mail_person.value==""){alert("請輸入聯絡人！");obj.mail_subject.focus();return false}
	if(obj.mail_phone.value==""){alert("請輸入聯絡電話！");obj.mail_content.focus();return false}
	if(obj.mail_email.value==""){alert("請輸入Email！");obj.mail_subject.focus();return false}
	if(obj.mail_website.value==""){alert("請輸入網址！");obj.mail_content.focus();return false}
	return true;
}