function show(level1, level2, level3) {
	for (var i = 0; i<=700; i++) {
		if (document.getElementById('menu'+i)) {document.getElementById('menu'+i).style.display='none';}

	}

	start0 = 0;
	end0 = 9;
	for (var i = start0; i<=end0; i++) {
		if (document.getElementById('menu'+i)) {document.getElementById('menu'+i).style.display='block';}
	}

  
	if (document.getElementById('menu'+level1)) {document.getElementById('menu'+level1).style.display='block';}
	start1 = level1*10+1;
	end1 = level1*10+9;
	high1 = level1;
	for (var i = start1; i<=end1; i++) {
		if (document.getElementById('menu'+i)) {document.getElementById('menu'+i).style.display='block';}
	}
	if (document.getElementById('a'+high1)) {document.getElementById('a'+high1).style.color='#AA0202';}
	
	start2 = level1*100+level2*10+1;
	end2 = level1*100+level2*10+9;
	high2 = level1*10+level2;
	for (var i = start2; i<=end2; i++) {
		if (document.getElementById('menu'+i)) {document.getElementById('menu'+i).style.display='block';}
	}
	if (document.getElementById('a'+high2)) {document.getElementById('a'+high2).style.color='#AA0202';}
	
	start3 = level1*1000+level2*100+level3*10+1;
	end3 = level1*1000+level2*100+level3*10+9;
	high3 = level1*100+level2*10+level3;
	for (var i = start3; i<=end3; i++) {
		if (document.getElementById('menu'+i)) {document.getElementById('menu'+i).style.display='block';}
	}
	if (document.getElementById('a'+high3)) {document.getElementById('a'+high3).style.color='#AA0202';}
	
}