function D_menulink(menu_link) {

    //if(menu_link == "menu_01") window.location = "/home/eng/bnc/president.jsp";
	if(menu_link == "menu_01") window.location = "/home/eng/bnc/chairman.jsp";
	if(menu_link == "menu_02") window.location = "/home/eng/bk21/aboutbk21.jsp";
	if(menu_link == "menu_03") window.location = "/home/eng/nuri/aboutnuri.jsp";
	if(menu_link == "menu_04") window.location = "/home/contactus.do?method=putForm";
	if(menu_link == "menu_05") window.location = "/home/eng/link/link.jsp";
}