var check = (navigator.appVersion.charAt(0) == "4") || ((navigator.appVersion.charAt(0) == "3") && (navigator.appName == "Netscape"));
if (check) {
    var img = new Array();
    img[0] = new Image(); img[0].src = "../images/photo_t01.jpg";
    img[1] = new Image(); img[1].src = "../images/photo_t02.jpg";
    img[2] = new Image(); img[2].src = "../images/photo_t03.jpg";
}
function setimg(no) {
	if (no == 0) {
		document.images["gazo"].src = img[0].src;
	} else if (no == 1) {
		document.images["gazo"].src = img[1].src;
	} else {
		document.images["gazo"].src = img[2].src;
	}
}