if(document.images) {
	var imgs = new Array();
	imgs[0] = new Image();  imgs[0].src = "http://www.twj.to/images/btn_top_on.gif";
	imgs[1] = new Image();  imgs[1].src = "http://www.twj.to/images/btn_top_off.gif";
	imgs[2] = new Image();  imgs[2].src = "http://www.twj.to/images/btn_skateboard_on.gif";
	imgs[3] = new Image();  imgs[3].src = "http://www.twj.to/images/btn_skateboard_off.gif";
	imgs[4] = new Image();  imgs[4].src = "http://www.twj.to/images/btn_snowboard_on.gif";
	imgs[5] = new Image();  imgs[5].src = "http://www.twj.to/images/btn_snowboard_off.gif";
	imgs[6] = new Image();  imgs[6].src = "http://www.twj.to/images/btn_motocross_on.gif";
	imgs[7] = new Image();  imgs[7].src = "http://www.twj.to/images/btn_motocross_off.gif";
	imgs[8] = new Image();  imgs[8].src = "http://www.twj.to/images/btn_surfing_on.gif";
	imgs[9] = new Image();  imgs[9].src = "http://www.twj.to/images/btn_surfing_off.gif";
	imgs[10] = new Image();  imgs[10].src = "http://www.twj.to/images/btn_lifestyle_on.gif";
	imgs[11] = new Image();  imgs[11].src = "http://www.twj.to/images/btn_lifestyle_off.gif";
	imgs[12] = new Image();  imgs[12].src = "http://www.twj.to/images/btn_link_on.gif";
	imgs[13] = new Image();  imgs[13].src = "http://www.twj.to/images/btn_link_off.gif";
	imgs[14] = new Image();  imgs[14].src = "http://www.twj.to/images/btn_privacy_on.gif";
	imgs[15] = new Image();  imgs[15].src = "http://www.twj.to/images/btn_privacy_off.gif";
	imgs[16] = new Image();  imgs[16].src = "http://www.twj.to/images/btn_rule_on.gif";
	imgs[17] = new Image();  imgs[17].src = "http://www.twj.to/images/btn_rule_off.gif";
	imgs[18] = new Image();  imgs[18].src = "http://www.twj.to/images/btn_company_on.gif";
	imgs[19] = new Image();  imgs[19].src = "http://www.twj.to/images/btn_company_off.gif";
	imgs[20] = new Image();  imgs[20].src = "http://www.twj.to/images/btn_aso_on.gif";
	imgs[21] = new Image();  imgs[21].src = "http://www.twj.to/images/btn_aso_off.gif";
	imgs[22] = new Image();  imgs[22].src = "http://www.twj.to/images/btn_close_on.gif";
	imgs[23] = new Image();  imgs[23].src = "http://www.twj.to/images/btn_close_off.gif";
        imgs[24] = new Image();  imgs[24].src = "http://www.twj.to/images/btn_site_on.gif";
        imgs[25] = new Image();  imgs[25].src = "http://www.twj.to/images/btn_site_off.gif";

}
function chgimg(id, imgname) {
	if(document.images) {
		if(imgs[imgname]) {
			document.images[id].src = imgs[imgname].src;
		}
		else {
			document.images[id].src = imgname;
		}
	}
}