function aa(i){
		cc(i);
	}
	function aa(i){
		switch(i){
			case 1:
			document.getElementById("aa1").style.display="block";
			document.getElementById("aa2").style.display="none";
			document.getElementById("aa3").style.display="none";
			document.getElementById("aa4").style.display="none";
			break;
			case 2:
			document.getElementById("aa1").style.display="none";
			document.getElementById("aa2").style.display="block";
			document.getElementById("aa3").style.display="none";
			document.getElementById("aa4").style.display="none";
			break;
			case 3:
			document.getElementById("aa1").style.display="none";
			document.getElementById("aa2").style.display="none";
			document.getElementById("aa3").style.display="block";
			document.getElementById("aa4").style.display="none";
			break;
			case 4:
			document.getElementById("aa1").style.display="none";
			document.getElementById("aa2").style.display="none";
			document.getElementById("aa3").style.display="none";
			document.getElementById("aa4").style.display="block";
			break;
		}
	}