$(document).ready(function () {
    var url = document.location.href;
    if ((url.indexOf('?lang=spa') >= 0) || (url.indexOf('&lang=spa') >= 0)) {
        $('#TopMenuEng').hide();
        $('#TopMenuSpa').show();
        $('#BottomMenuEng').hide();
        $('#BottomMenuSpa').show();
    } else {
        $('#TopMenuEng').show();
        $('#TopMenuSpa').hide();
        $('#BottomMenuEng').show();
        $('#BottomMenuSpa').hide();
    }
});