if(muflg==null){
	var muflg=2;
}
cmu(muflg);
function cmu(muid){
	if (muflg!=0){
		if(muflg!=muid){
			var oldmu=document.getElementById("menu"+muflg);
			oldmu.className='';
			var oldsub=document.getElementById("sub"+muflg);
			oldsub.style.display='none';
		}
	}
	var loadmu=document.getElementById("menu"+muid);
	loadmu.className='menuon';
	var loadsub=document.getElementById("sub"+muid);
	loadsub.style.display='block';
	muflg=muid;
}