if(navigator.appVersion.charAt(0) >= "3") {
var img = new Array();
img[1] = new Image();  img[1].src = "../images/menu1a.gif";
img[2] = new Image();  img[2].src = "../images/menu1b.gif";
img[3] = new Image();  img[3].src = "../images/menu2a.gif";
img[4] = new Image();  img[4].src = "../images/menu2b.gif";
img[5] = new Image();  img[5].src = "../images/menu3a.gif";
img[6] = new Image();  img[6].src = "../images/menu3b.gif";
img[7] = new Image();  img[7].src = "../images/menu4a.gif";
img[8] = new Image();  img[8].src = "../images/menu4b.gif";
img[9] = new Image();  img[9].src = "../images/menu5a.gif";
img[10] = new Image();  img[10].src = "../images/menu5b.gif";
img[11] = new Image();  img[11].src = "../images/menu6a.gif";
img[12] = new Image();  img[12].src = "../images/menu6b.gif";

img[21] = new Image();  img[21].src = "images/sub_menu1a.gif";
img[22] = new Image();  img[22].src = "images/sub_menu1b.gif";
img[23] = new Image();  img[23].src = "images/sub_menu2a.gif";
img[24] = new Image();  img[24].src = "images/sub_menu2b.gif";
img[25] = new Image();  img[25].src = "images/sub_menu3a.gif";
img[26] = new Image();  img[26].src = "images/sub_menu3b.gif";
img[27] = new Image();  img[27].src = "images/sub_menu4a.gif";
img[28] = new Image();  img[28].src = "images/sub_menu4b.gif";
img[29] = new Image();  img[29].src = "images/sub_menu5a.gif";
img[30] = new Image();  img[30].src = "images/sub_menu5b.gif";

}
function _in(nam,num) {
if(navigator.appVersion.charAt(0) >= "3") {
document.images[nam].src = img[num].src;
} else { }
}
function _out(nam,num) {
document.images[nam].src = img[num].src;
}