if (document.images){
	onImgair = new Image(112,13);
	onImgair.src = "img/top_air_btn02.gif";
	offImgair = new Image(112,13);
	offImgair.src = "img/top_air_btn01.gif";

	onImgtr = new Image(112,13);
	onImgtr.src = "img/top_tr0602.gif";
	offImgtr = new Image(112,13);
	offImgtr.src = "img/top_tr0601.gif";

	onImgtm1 = new Image(280,34);
	onImgtm1.src = "img/top_mn_1l2.gif";
	onImgtm2 = new Image(216,34);
	onImgtm2.src = "img/top_mn_2l2.gif";
	onImgtm3 = new Image(298,33);
	onImgtm3.src = "img/top_mn_3l2.gif";
	onImgtm4 = new Image(299,34);
	onImgtm4.src = "img/top_mn_4l2.gif";
	onImgtm5 = new Image(266,33);
	onImgtm5.src = "img/top_mn_5l2.gif";
	onImgtm6 = new Image(178,25);
	onImgtm6.src = "img/top_mn_6l2.gif";
	offImgtm1 = new Image(280,34);
	offImgtm1.src = "img/top_mn_1l1.gif";
	offImgtm2 = new Image(216,34);
	offImgtm2.src = "img/top_mn_2l1.gif";
	offImgtm3 = new Image(298,33);
	offImgtm3.src = "img/top_mn_3l1.gif";
	offImgtm4 = new Image(299,34);
	offImgtm4.src = "img/top_mn_4l1.gif";
	offImgtm5 = new Image(266,33);
	offImgtm5.src = "img/top_mn_5l1.gif";
	offImgtm6 = new Image(178,25);
	offImgtm6.src = "img/top_mn_6l1.gif";


}