Expose demo 4 / 5 can not expose in standalone page Created Mar 22, 2010

Expose demo 4 / 5 : Exposing videos with a custom mask.

in standalone page it can not play,but alert the confirm to download the flv file.

i fixed it in my local file,it can play correctly, but can not expose.seemly it didn't create the exposeMask div. the flowplayer function didn't work.
onStart: function() {
alert("start");
expose.load();
},

onResume: function() {
expose.load();
},

// when playback finishes, close the expose
onFinish: function() {
expose.close();
}