// ¸ÞÀΰԽÃÆÇ ¼±ÅÃ

function bbs_sel(gubun) {

  if (gubun == 'a') {
	   document.all.bbs_a.style.display = 'block';
	   document.all.bbs_b.style.display = 'none';
	   document.all.bbs_c.style.display = 'none';
	   document.all.bbs_d.style.display = 'none';
	   document.bbsimg_a.src = "images/menu_data_room_up.gif";
	   document.bbsimg_b.src = "images/menu_notice.gif";
	   document.bbsimg_c.src = "images/menu_seminar.gif";
	   document.bbsimg_d.src = "images/menu_event.gif";
  }
  else if (gubun == 'b') {
	   document.all.bbs_a.style.display = 'none';
	   document.all.bbs_b.style.display = 'block';
	   document.all.bbs_c.style.display = 'none';
	   document.all.bbs_d.style.display = 'none';
	   document.bbsimg_a.src = "images/menu_data_room.gif";
	   document.bbsimg_b.src = "images/menu_notice_up.gif";
	   document.bbsimg_c.src = "images/menu_seminar.gif";
	   document.bbsimg_d.src = "images/menu_event.gif";
  }
  else if (gubun == 'c') {
	   document.all.bbs_a.style.display = 'none';
	   document.all.bbs_b.style.display = 'none';
	   document.all.bbs_c.style.display = 'block';
	   document.all.bbs_d.style.display = 'none';
	   document.bbsimg_a.src = "images/menu_data_room.gif";
	   document.bbsimg_b.src = "images/menu_notice.gif";
	   document.bbsimg_c.src = "images/menu_seminar_up.gif";
	   document.bbsimg_d.src = "images/menu_event.gif";
  }
  else if (gubun == 'd') {
	   document.all.bbs_a.style.display = 'none';
	   document.all.bbs_b.style.display = 'none';
	   document.all.bbs_c.style.display = 'none';
	   document.all.bbs_d.style.display = 'block';
	   document.bbsimg_a.src = "images/menu_data_room.gif";
	   document.bbsimg_b.src = "images/menu_notice.gif";
	   document.bbsimg_c.src = "images/menu_seminar.gif";
	   document.bbsimg_d.src = "images/menu_event_up.gif";
  }

}