How to use jQuery oEmbed plugin

$(document).ready(function(){

  // Configure jQuery oEmbed library
  $.fn.oembed.defaults = {
        maxWidth: 500, maxHeight: 400,
        embedMethod: "append" // "replace", "auto", "append", "fill"
  };

  // Append the oEmbed contents fetched from #oembed_url
  $("form#oembed_form").submit( function () {
  
    $("#oembed_contents").oembed($("#oembed_url").attr("value"));
    return false;
  });
});