Removing Frames b/w Keyframes

[Cerulean]

Hey there...

I am presently working on a project in which I am creating a custom JSFL file. The functionality I am looking for is that whenever I run the command a blank keyFrame will be inserted into the first frame, shifting all of the other frames over one. Then, I need to remove all of the frames that are between any keyframes so that the FLA is nothing but a series of keyFrames with a blank keyFrame in front.

I have so far gotten the blank keyFrame in and the layers shifted over one but I need a way to dynamically delete the frames in between the keyFrames, since the files that we will be editing will vary in size and setup. I have created an array that captures all of the startFrames and then lists the frameSpan but I am unable, for some reason, to remove them from the timeline. Any suggestions or advise? Here is the jsfl file that I have created so far:

var doc = fl.getDocumentDOM();
var tim = fl.getDocumentDOM().getTimeline(); 
var frCnt =  tim.frameCount;
var lyCnt =  tim.layerCount;
//
//
/* 
  Cut all frames from the timeline so I can 
  insert a blank key frame in the first frame - jbm
*/
//
tim.selectAllFrames();
tim.cutFrames();
tim.currentLayer = 0;
for (var j=0; j<frCnt; j++) {
    tim.selectAllFrames(0,frCnt);
    tim.removeFrames(0,frCnt);
    tim.currentLayer += 1;
}
//
/* 
  Create a 'Stop' action for the first frame
  Label first frame 'Blank Frame' 
  Paste Frames at layer index 0 frame index 1 - jbm
*/
//
tim.currentLayer = 0;
tim.addNewLayer();
tim.insertBlankKeyframe(0);
tim.layers[0].frames[0].actionScript = 'stop();'; 
tim.setFrameProperty('name', 'Blank Frame'); 
//
//
tim.currentLayer = 0;
tim.pasteFrames(1);
//
var lyCnt02 = tim.layerCount;
var frCnt02 = tim.frameCount;
/* 
  Rename all layer "New Layer" plus their index number 
  ie: New Layer 0, New Layer 1, etc...  - jbm
*/
//

tim.currentLayer = 0;
for (var i=0; i<lyCnt; i++) {
    for (j=0; j<n; j++) {
        var curLayer = tim.currentLayer;
        var curFrame = tim.currentFrame;
        var frameArray = tim.layers[curLayer].frames;
        var n = frameArray.length;
        var frameSpan = tim.layers[curLayer].frames[curFrame].duration;
        var stFrame = frameArray[j].startFrame;
        var delFrame01 = stFrame + 1;
        var delFrame02 = delFrame01 + 1;
        fl.trace(lyCnt02);
        if (j==stFrame) {
            fl.trace("Keyframe at: " + j);
            fl.trace("Duration of " + frameSpan +  "frames");
            tim.setSelectedFrames(delFrame01);
            tim.removeFrames(delFrame01, delFrame02);
            }
        }   
        if (lyCnt02>lyCnt) {
            for (var k=0; k<lyCnt02; k++) {
                var curLayer = tim.currentLayer;
                var delLyr = lyCnt;
                tim.currentLayer = delLyr;
                tim.deleteLayer(delLyr);
                }
        }
    tim.layers[curLayer].locked = true;
    tim.currentLayer += 1;
    tim.currentFrame += 1;
}