var menu_num = 0;
var on_off = 0;
function menuOpen(id){
	if(menu_num != id){
		on_off = 0;
	}
	menu_num = id;
	document.getElementById('fz').style.display = "none";
	document.getElementById('ft').style.display = "none";
	document.getElementById('tz').style.display = "none";
	document.getElementById('lx').style.display = "none";
	document.getElementById('fx').style.display = "none";
	document.getElementById('fs').style.display = "none";
	document.getElementById('lz').style.display = "none";
	document.getElementById('ls').style.display = "none";
	document.getElementById('lc').style.display = "none";
	document.getElementById('l1').style.display = "none";
	document.getElementById('gm').style.display = "none";
	document.getElementById('zr').style.display = "none";
	document.getElementById('fp').style.display = "none";

	if(on_off == 1){
		document.getElementById(id).style.display = "none";
		on_off = 0;
	}else{
		document.getElementById(id).style.display = "block";
		on_off = 1;
	}
}