cover_mc obscures all other movie clips

Hi there,
 I fixed a problem I was having with misnamed movie clips in a custom video 
control swf I'm building, but I'm still having no luck getting the controls to 
float over cover_mc.

 I've dropped pause_mc a little along the y-axis to illustrate the problem.
 You can see it in action at:
 http://www.alternium.net/video_test.htm
 Does anyone have any suggestions?

 function getSkinInfo():Object {
     var res:Object = new Object();
 	res.video = {x:1, y:1, w:-2, h:-2};
 	res.mode = "disabled";
 	res.playBtn = {x:5, y:-30};
 	res.pauseBtn = {x:20, y:-20};
     res.stopBtn = {x:35, y:-30};
     res.seekBar = {x:55, y:-25, w:-130};
     res.buffering = {x:55, y:-31, w:-231};
     res.volumeMute = {x:-66, y:-31};
     res.volumeBar = {x:-53, y:-30, l:51, type:"horizontal"};
 	
 	res.autoHide = false;
     res.bgColor = 0xFFFFFF;
     res.uiMode = "stretch";
     return res;
 }