var submenu='';
/* menubar  */
function subDisplay(num,t_num){
 var divid;
 var oDiv;
 t_num++;
 for(var i=1; i <t_num; i++){
  divid = document.getElementById("submenu" + i);
  oDiv = document.getElementById("menu"+ i);
  oImg = document.getElementById("img"+i);
  if(i == num){
   if(divid.style.display == 'block'){
    divid.style.display = 'none';
    oDiv.style.backgroundColor='#ffffff'; 
    oDiv.style.color='#424242';
	oImg.style.visibility='visible';
   }else{
    divid.style.display = 'block';
    oDiv.style.backgroundColor='#424242';
	oDiv.style.color='#ffffff';
	oImg.style.visibility='hidden';
   }
  }else{
   divid.style.display = 'none';
   oDiv.style.backgroundColor='#ffffff'; 
   oDiv.style.color='#424242';
   oImg.style.visibility='visible';
  }
 }
}
function liDisplay(m_num,num,t_num) {
	t_num++;
	for(var i=1;i<t_num;i++){
		oLi = document.getElementById("sub" + m_num + "li" + i);	 
		oImg = document.getElementById("sub" + m_num + "li_img" + i);
	  	if(i == num){
			oLi.style.textDecoration='underline';
			oImg.style.visibility = 'visible';
	  	}else{
			oLi.style.textDecoration='none';
		}		
	}
}

function liOver(m_num2,num2) { 
		oLi2 = document.getElementById("sub" + m_num2 + "li" + num2);	 
		oImg2 = document.getElementById("sub" + m_num2 + "li_img" + num2);
		oLi2.style.textDecoration='none';
		oImg2.style.visibility='hidden';		
}