function menu_up(l){
	if(l==0){
		menu_01.style.display="none";
		menu_02.style.display="none";
		menu_03.style.display="none";

	}
	if(l==1){
		menu_01.style.display="block";
		menu_02.style.display="none";
		menu_03.style.display="none";

	}
	if(l==2){
		menu_01.style.display="none";
		menu_02.style.display="block";
		menu_03.style.display="none";

	}
	if(l==3){
		menu_01.style.display="none";
		menu_02.style.display="none";
		menu_03.style.display="block";

	}
	
}