function z(i){
		z(i);
	}
	function z(i){
		switch(i){
			case 1:
			document.getElementById("z1").style.display="block";
			document.getElementById("z2").style.display="none";
			document.getElementById("z3").style.display="none";
			document.getElementById("z4").style.display="none";
			document.getElementById("z5").style.display="none";
			break;
			case 2:
			document.getElementById("z1").style.display="none";
			document.getElementById("z2").style.display="block";
			document.getElementById("z3").style.display="none";
			document.getElementById("z4").style.display="none";
			document.getElementById("z5").style.display="none";
			break;
			case 3:
			document.getElementById("z1").style.display="none";
			document.getElementById("z2").style.display="none";
			document.getElementById("z3").style.display="block";
			document.getElementById("z4").style.display="none";
			document.getElementById("z5").style.display="none";
			break;
			case 4:
			document.getElementById("z1").style.display="none";
			document.getElementById("z2").style.display="none";
			document.getElementById("z3").style.display="none";
			document.getElementById("z4").style.display="block";
			document.getElementById("z5").style.display="none";
			break;
			case 5:
			document.getElementById("z1").style.display="none";
			document.getElementById("z2").style.display="none";
			document.getElementById("z3").style.display="none";
			document.getElementById("z4").style.display="none";
			document.getElementById("z5").style.display="block";
			break;
		}
	}