Function background

docs/app/js/sanddance-app.js:122538–122542

(emit5, item)

    emit4("d", rectangle(null, item, off, off));
}
function background(emit5, item) {
    emit5("class", "background");
    emit5("aria-hidden", true);
    emitRectangle(emit5, item);
}
function foreground(emit6, item) {
    emit6("class", "foreground");
    emit6("aria-hidden", true);