function check_member()
   {
		s_form_verify='';
		//驗証mail
		s_form_verify+=chk_mail(document.getElementById("email").value);
		
		

		if(s_form_verify!='')
		{
			alert(s_form_verify);
			return false;
		}
		document.form_member.action='join_member.php';
		document.form_member.submit();
   }