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";

}
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;
}