function a(i){
		a(i);
	}
	function a(i){
		switch(i){
			case 1:
			document.getElementById("a1").style.display="block";
			document.getElementById("a2").style.display="none";
			document.getElementById("a3").style.display="none";
			document.getElementById("a4").style.display="none";
			break;
			case 2:
			document.getElementById("a1").style.display="none";
			document.getElementById("a2").style.display="block";
			document.getElementById("a3").style.display="none";
			document.getElementById("a4").style.display="none";
			break;
			case 3:
			document.getElementById("a1").style.display="none";
			document.getElementById("a2").style.display="none";
			document.getElementById("a3").style.display="block";
			document.getElementById("a4").style.display="none";
			break;
			case 4:
			document.getElementById("a1").style.display="none";
			document.getElementById("a2").style.display="none";
			document.getElementById("a3").style.display="none";
			document.getElementById("a4").style.display="block";
			break;
		}
	}
	
function b(i){
		b(i);
	}
	function b(i){
		switch(i){
			case 1:
			document.getElementById("b1").style.display="block";
			document.getElementById("b2").style.display="none";
			document.getElementById("b3").style.display="none";
			document.getElementById("b4").style.display="none";
			break;
			case 2:
			document.getElementById("b1").style.display="none";
			document.getElementById("b2").style.display="block";
			document.getElementById("b3").style.display="none";
			document.getElementById("b4").style.display="none";
			break;
			case 3:
			document.getElementById("b1").style.display="none";
			document.getElementById("b2").style.display="none";
			document.getElementById("b3").style.display="block";
			document.getElementById("b4").style.display="none";
			break;
			case 4:
			document.getElementById("b1").style.display="none";
			document.getElementById("b2").style.display="none";
			document.getElementById("b3").style.display="none";
			document.getElementById("b4").style.display="block";
			break;
		}
	}
	
function c(i){
		c(i);
	}
	function c(i){
		switch(i){
			case 1:
			document.getElementById("c1").style.display="block";
			document.getElementById("c2").style.display="none";
			document.getElementById("c3").style.display="none";
			document.getElementById("c4").style.display="none";
			break;
			case 2:
			document.getElementById("c1").style.display="none";
			document.getElementById("c2").style.display="block";
			document.getElementById("c3").style.display="none";
			document.getElementById("c4").style.display="none";
			break;
			case 3:
			document.getElementById("c1").style.display="none";
			document.getElementById("c2").style.display="none";
			document.getElementById("c3").style.display="block";
			document.getElementById("c4").style.display="none";
			break;
			case 4:
			document.getElementById("c1").style.display="none";
			document.getElementById("c2").style.display="none";
			document.getElementById("c3").style.display="none";
			document.getElementById("c4").style.display="block";
			break;
		}
	}
	
function d(i){
		d(i);
	}
	function d(i){
		switch(i){
			case 1:
			document.getElementById("d1").style.display="block";
			document.getElementById("d2").style.display="none";
			document.getElementById("d3").style.display="none";
			document.getElementById("d4").style.display="none";
			break;
			case 2:
			document.getElementById("d1").style.display="none";
			document.getElementById("d2").style.display="block";
			document.getElementById("d3").style.display="none";
			document.getElementById("d4").style.display="none";
			break;
			case 3:
			document.getElementById("d1").style.display="none";
			document.getElementById("d2").style.display="none";
			document.getElementById("d3").style.display="block";
			document.getElementById("d4").style.display="none";
			break;
			case 4:
			document.getElementById("d1").style.display="none";
			document.getElementById("d2").style.display="none";
			document.getElementById("d3").style.display="none";
			document.getElementById("d4").style.display="block";
			break;
		}
	}
	
function sl(i){
		sl(i);
	}
	function sl(i){
		switch(i){
			case 1:
			document.getElementById("sl1").style.display="block";
			document.getElementById("sl2").style.display="none";
			
			break;
			case 2:
			document.getElementById("sl1").style.display="none";
			document.getElementById("sl2").style.display="block";
		
			break;
		
		}
	}