window.onload=function(){switchNavImg();}
var overImg	= ["images/dhang01.jpg","images/dhang02.jpg","images/dhang03.jpg","images/dhang04.jpg","images/dhang05.jpg","images/dhang06.jpg"];
var outImg	= ["images/dhang1.jpg","images/dhang2.jpg","images/dhang3.jpg","images/dhang4.jpg","images/dhang5.jpg","images/dhang6.jpg"];
function switchNavImg(){
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	if(!document.getElementById)return;
	var obj_0 = document.getElementById(id[0]);
	var obj_1 = document.getElementById(id[1]);
	var obj_2 = document.getElementById(id[2]);
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}