[Plugin] YouTube plugin problems with IE

I'm attempting to write a YouTube plugin for 2.6+. I've gotten it functioning perfectly well in FF, but of course, IE is being problematic. I simply can't get it to handle the EMBED and PARAM tags appropriately. I want to create a fake IMG in the editor, tied to the actual OBJECT in the EditorDocument. Here's the pertinent code from my Ok function:

function Ok() {

// Just a sample of the YouTube video ID that is entered into the dialog via the embed code or url
var videoId = 'RXJKdh1KZ0w';

oEditor.FCKUndo.SaveUndoStep();
      
var toInsert = '';
toInsert    +=   '<param name="movie" value="http://www.youtube.com/v/' + videoId + '&hl=en"></param>';
toInsert    +=   '<param name="wmode" value="transparent"></param>';
toInsert    +=   '<embed src="http://www.youtube.com/v/' + videoId + '&hl=en" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed>';

if (!oObject) {

oObject = FCK.EditorDocument.createElement('OBJECT');
oObject.innerHTML = toInsert;
oFakeImage = null;

}

if (!oFakeImage) {

oFakeImage = oEditor.FCKDocumentProcessor_CreateFakeImage('FCK__UnknownObject', oObject);
oFakeImage.style.height = '355';
oFakeImage.style.width = '425';
oFakeImage.style.border = '1px solid black';
oFakeImage.style.background = 'center center url("' + FCK.Plugins.Items['youtube'].Path + 'youtube_logo.png' + '") no-repeat';
oFakeImage = FCK.InsertElement(oFakeImage);

}

return true;
}

The issue is IE doesn't seem to allow the innerHTML call on the newly created OBJECT. What are the appropriate FCK methods to use in order to get this done?

Utilizing the DOM methods like this, also fails:

var param1 = FCK.EditorDocument.createElement('PARAM');
SetAttribute(param1, "name", "movie");
SetAttribute(param1, "value", "http://www.youtube.com/v/" + videoId + "&hl=en");
   
var param2 = FCK.EditorDocument.createElement('PARAM');
SetAttribute(param2, "name", "wmode");
SetAttribute(param2, "value", "transparent");
   
var embed = FCK.EditorDocument.createElement('EMBED');
SetAttribute(embed, "src", "http://www.youtube.com/v/" + videoId + "&hl=en");
SetAttribute(embed, "type", "application/x-shockwave-flash");
SetAttribute(embed, "wmode", "transparent");
SetAttribute(embed, "width", 425);
SetAttribute(embed, "height", 355);
   
el.appendChild(param1);
el.appendChild(param2);
el.appendChild(embed);

IE bails on the last appendChild (for the EMBED). I've also tried FCK's InsertElement and InsertHtml methods, but can't get that to work either. Are there appropriate methods to use with the EditorDocument?

If anyone could offer suggestions, I'd really appreciate it. I, of course, plan on making this plugin publicly available as soon as it's functional.

Thanks in advance for any help.

-TeddyG