var mnuSelected = '';
function showMenu(menu) {
        hideMenu(mnuSelected);
        document.getElementById(menu).style.visibility = 'visible';
        mnuSelected = menu;
}
function hideMenu(menu) {
        if(mnuSelected!='')
                document.getElementById(menu).style.visibility = 'hidden';
}

function init() {
        document.getElementById('Go').style.left = 80;
        document.getElementById('mnuGo').style.left =
        document.getElementById('Go').style.left;
}