Show me after one half minute. Since we don’t want a fade-in, we can leave it out of the “show” attribute completely.
Show me after one half minute with a 500 millisecond (1/2 second) fade-in.
Hide me after one half minute with a 500 millisecond (1/2 second) fade-out.
Show me after one half minute with a 500 millisecond (a half-second) fade-in, then hide me after one minutes with a 2000 millisecond (2 seconds) fade-out.