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banner01_on.src="./img/banner_1a.jpg";
var banner01_off=new Image();
banner01_off.src="./img/banner_1.jpg";

var banner02_on=new Image();
banner02_on.src="./img/banner_2a.jpg";
var banner02_off=new Image();
banner02_off.src="./img/banner_2.jpg";

var banner03_on=new Image();
banner03_on.src="./img/banner_3a.jpg";
var banner03_off=new Image();
banner03_off.src="./img/banner_3.jpg";

var banner04_on=new Image();
banner04_on.src="./img/banner_4a.jpg";
var banner04_off=new Image();
banner04_off.src="./img/banner_4.jpg";

var banner05_on=new Image();
banner05_on.src="./img/banner_5a.jpg";
var banner05_off=new Image();
banner05_off.src="./img/banner_5.jpg";

var banner06_on=new Image();
banner06_on.src="./img/banner_6a.jpg";
var banner06_off=new Image();
banner06_off.src="./img/banner_6.jpg";

var banner07_on=new Image();
banner07_on.src="./img/kamlang_banner1_a.jpg";
var banner07_off=new Image();
banner07_off.src="./img/kamlang_banner1.jpg";