function subCTRL(menu) {
  if(menu == 'intro') {
    document.getElementById("submenu_intro").style.display    	= "block";
    document.getElementById("submenu_notice").style.display  	= "none";
    document.getElementById("submenu_pds").style.display  		= "none";
    document.getElementById("submenu_branch").style.display   	= "none";
    document.getElementById("submenu_comm").style.display  		= "none";
  }else if(menu == "notice") {
    document.getElementById("submenu_intro").style.display    	= "none";
    document.getElementById("submenu_notice").style.display   	= "block";
    document.getElementById("submenu_pds").style.display  		= "none";
    document.getElementById("submenu_branch").style.display   	= "none";
    document.getElementById("submenu_comm").style.display  		= "none";
  }else if(menu == "branch") {
    document.getElementById("submenu_intro").style.display    	= "none";
    document.getElementById("submenu_notice").style.display   	= "none";
    document.getElementById("submenu_pds").style.display  		= "block";
    document.getElementById("submenu_branch").style.display   	= "none";
    document.getElementById("submenu_comm").style.display  		= "none";
  }else if(menu == "pds") {
    document.getElementById("submenu_intro").style.display    	= "none";
    document.getElementById("submenu_notice").style.display   	= "none";
    document.getElementById("submenu_pds").style.display  		= "none";
    document.getElementById("submenu_branch").style.display   	= "block";
    document.getElementById("submenu_comm").style.display  		= "none";
  }else if(menu == "comm") {
    document.getElementById("submenu_intro").style.display    	= "none";
    document.getElementById("submenu_notice").style.display   	= "none";
    document.getElementById("submenu_pds").style.display  		= "none";
    document.getElementById("submenu_branch").style.display   	= "none";
    document.getElementById("submenu_comm").style.display  		= "block";
  }
}