How to wait 5 seconds with jQuery?

I’m trying to create an effect where the page loads, and after 5 seconds, the success message on the screen fades out, or slides up.

How can I achieve this?

Built in javascript setTimeout.

setTimeout(
  function() 
  {
    //do something special
  }, 5000);

UPDATE: you want to wait since when the page has finished loading, so put that code inside your $(document).ready(...); script.

UPDATE 2: jquery 1.4.0 introduced the .delay method. Check it out. Note that .delay only works with the jQuery effects queues.