if(navigator.appVersion.charAt(0) >= "3"){
	img = new Array();

	img[0] = new Image; img[0].src = "topimg/more01.gif";
	img[1] = new Image; img[1].src = "topimg/more02.gif";
}
function chg_btn(imgname,imgstate){  
		document.images[imgname].src=img[imgstate].src;
}