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.