if(!is_ie3 || !is_nav3){
var menu = new Array();
menu[0] = new Image();  menu[0].src = "img/foo_pri_off.gif";
menu[1] = new Image();  menu[1].src = "img/foo_pri_on.gif";
menu[2] = new Image();  menu[2].src = "img/foo_sitemap_off.gif";
menu[3] = new Image();  menu[3].src = "img/foo_sitemap_on.gif";
}

function Mein(nam,num) {
        if(!is_ie3 || !is_nav3) document.images[nam].src = menu[num].src;
}
function Meout(nam,num) {
        if(!is_ie3 || !is_nav3) document.images[nam].src = menu[num].src;
}
function menu_onLoad() {
}