// JavaScript Document
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";
	}