そうかバラせばよかったのか {html_select_date time = "" prefix = "birthday_" start_year = "1920" end_year = "-1" field_order = "Y" field_separator = "" year_empty = "" all_extra = 'class="html_select_date"' }年 {html_select_date time = "" prefix = "birthday_" month_format = "%m" field_order = "M" field_separator = "" month_empty = "" all_extra = 'class="html_select_date"' }月 {html_select_date time = "" prefix =