v1.2
        done:
        	1.create member and insert into DB.(2013/06/25)
        	2.catch exception detaily.
        	3.enquire member by muti contition.(2013/06/26)
                4.update member.
        undone:
        	1.validate user input in create.jsp by JavaScript.(2013/06/25)
        	2.validate user data in create_check.jsp.
        	3.validate user input in enquire.jsp by JavaScript.(2013/06/26)
        	4.validate user data in enquire_check.jsp.
                5.validate user input in enquire.jsp by JavaScript.
                6.validate user data(especially date) in update_detail.jsp.