Replacing Components with MovieClips

programming flash
1

Ok, so I have a guest book that I am working off of, found here. But it uses the button component, which is just too large and unpretty for my tastes. How do I replace the button component with the myButton movieClip. I have tried just a straight swap, but that doesn’t work. The AS on the button is:

on(click){
    /* 
    Modify these reference paths to yours if you
    have changed them. Also modify gb_status
    reference path if required
    */
    yourname = _parent._parent.write.yourname.text;
    youremail = _parent._parent.write.youremail.text;
    yourcomments = _parent._parent.write.yourcomments.text;
    
    // Check variable data
    if (yourname eq "") {
        _parent._parent.write.gb_status.text = "Required: Name";
    } else if (youremail eq "") {
        _parent._parent.write.gb_status.text = "Required: Email Address";
    } else if (!youremail.length || youremail.indexOf("@") == -1 || youremail.indexOf(".") == -1) {
        _parent._parent.write.gb_status.text = "Required: Valid Email Address";
    } else if (yourcomments eq "") {
        _parent._parent.write.gb_status.text = "Required: Comments";
    } else {
        _parent._parent.write.gb_status.text = "Please wait...";
        newEntry = new LoadVars()
        newEntry.ref = this
        newEntry.submit = "Yes" 
        newEntry.yourname = yourname
        newEntry.youremail = youremail 
        newEntry.yourcomments = yourcomments 
        newEntry.sendAndLoad("GuestBook.php?action=write&r="+random(999), newEntry, "POST") 
        newEntry.onLoad = function(success){ 
            if(success){ 
                _parent._parent.write.gb_status.text = this.gb_status;
                _parent._parent.read.loadEntries("Default", 10);
                // Clear fields
                _parent._parent.write.yourname.text = "";
                _parent._parent.write.youremail.text = "";
                _parent._parent.write.yourcomments.text = "";
            }
        } 
    }
}

Here is the fla

Any help would be greatly appreciated.