// menu
function ss(x)
	{ 
	switch(x){
		case 1:
				document.getElementById("sk1").style.display="block";
				document.getElementById("skk1").style.display="block";
				document.getElementById("skkk1").style.display="block";
				break;
		case 2:
				document.getElementById("sk2").style.display="block";
				document.getElementById("skk2").style.display="block";
				document.getElementById("skkk2").style.display="block";
				break;
		case 3:
		  		document.getElementById("sk3").style.display="block";
				document.getElementById("skk3").style.display="block";
				break;
		case 4:
				document.getElementById("sk4").style.display="block";
				break;
		case 5:
				document.getElementById("sk5").style.display="block";
				break;
				}}
function sss(x)
	{ 
	switch(x){
		case 1:
				document.getElementById("sk1").style.display="none";
				document.getElementById("skk1").style.display="none";
				document.getElementById("skkk1").style.display="none";
				break;
		case 2:
				document.getElementById("sk2").style.display="none";
				document.getElementById("skk2").style.display="none";
				document.getElementById("skkk2").style.display="none";
				break;
		case 3:
		  		document.getElementById("sk3").style.display="none";
				document.getElementById("skk3").style.display="none";
				break;
		case 4:
				document.getElementById("sk4").style.display="none";
				break;
		case 5:
				document.getElementById("sk5").style.display="none";
				break;
				}}