//ʾ
function show1(){
		document.getElementById("ceng1").style.display="";
	}
function dis1(){
		document.getElementById("ceng1").style.display="none";
	}
function show2(){
		document.getElementById("ceng2").style.display="";
	}
function dis2(){
		document.getElementById("ceng2").style.display="none";
	}
function show3(){
		document.getElementById("ceng3").style.display="";
	}
function dis3(){
		document.getElementById("ceng3").style.display="none";
	}
function show4(){
		document.getElementById("ceng4").style.display="";
	}
function dis4(){
		document.getElementById("ceng4").style.display="none";
	}
function show5(){
		document.getElementById("ceng5").style.display="";
	}
function dis5(){
		document.getElementById("ceng5").style.display="none";
	}
function show6(){
		document.getElementById("ceng6").style.display="";
	}
function dis6(){
		document.getElementById("ceng6").style.display="none";
	}
function show7(){
		document.getElementById("ceng7").style.display="";
	}
function dis7(){
		document.getElementById("ceng7").style.display="none";
	}
function show8(){
		document.getElementById("ceng8").style.display="";
	}
function dis8(){
		document.getElementById("ceng8").style.display="none";
	}
function show9(){
		document.getElementById("ceng9").style.display="";
	}
function dis9(){
		document.getElementById("ceng9").style.display="none";
	}
function show10(){
		document.getElementById("ceng10").style.display="";
	}
function dis10(){
		document.getElementById("ceng10").style.display="none";
	}
function show11(){
		document.getElementById("ceng11").style.display="";
	}
function dis11(){
		document.getElementById("ceng11").style.display="none";
	}	
function show12(){
		document.getElementById("ceng12").style.display="";
	}
function dis12(){
		document.getElementById("ceng12").style.display="none";
	}	
function show13(){
		document.getElementById("ceng13").style.display="";
	}
function dis13(){
		document.getElementById("ceng13").style.display="none";
	}	
function show14(){
		document.getElementById("ceng14").style.display="";
	}
function dis14(){
		document.getElementById("ceng14").style.display="none";
	}
function show15(){
		document.getElementById("ceng15").style.display="";
	}
function dis15(){
		document.getElementById("ceng15").style.display="none";
	}
function show16(){
		document.getElementById("ceng16").style.display="";
	}
function dis16(){
		document.getElementById("ceng16").style.display="none";
	}
function show17(){
		document.getElementById("ceng17").style.display="";
	}
function dis17(){
		document.getElementById("ceng17").style.display="none";
	}
function show18(){
		document.getElementById("ceng18").style.display="";
	}
function dis18(){
		document.getElementById("ceng18").style.display="none";
	}