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

function _out(nam,num) {
 document.images[nam].src = img[num].src;
 }

if(navigator.appVersion.charAt(0) >=3) {
var img = new Array();
img[10] = new Image();  img[10].src = "../images/menu_top.gif";
img[20] = new Image();  img[20].src = "../images/menu_message.gif";
img[30] = new Image();  img[30].src = "../images/menu_gaiyo.gif";
img[40] = new Image();  img[40].src = "../images/menu_jyoho.gif";
img[50] = new Image();  img[50].src = "../images/menu_kiroku.gif";
img[60] = new Image();  img[60].src = "../images/menu_katari.gif";
img[70] = new Image();  img[70].src = "../images/menu_chishiki.gif";
img[80] = new Image();  img[80].src = "../images/menu_mm.gif";

img[11] = new Image();  img[11].src = "../images/menu_top_over.gif";
img[21] = new Image();  img[21].src = "../images/menu_message_over.gif";
img[31] = new Image();  img[31].src = "../images/menu_gaiyo_over.gif";
img[41] = new Image();  img[41].src = "../images/menu_jyoho_over.gif";
img[51] = new Image();  img[51].src = "../images/menu_kiroku_over.gif";
img[61] = new Image();  img[61].src = "../images/menu_katari_over.gif";
img[71] = new Image();  img[71].src = "../images/menu_chishiki_over.gif";
img[81] = new Image();  img[81].src = "../images/menu_mm_over.gif";
}