Using a preloader in a separate AS file?

Question

Hey folks,
I've appropriated a preloader I created previous where it existed on the main timeline. For my new project, I placed it in an external AS file, but something's off. I keep getting this error message, referencing line 16 in my line of code:
"1046: Type was not found or was not a compile-time constant: Event."
The code is below:
package {
    import flash.display.MovieClip;
    import flash.events.Event.ENTER_FRAME;
    import flash.events.MouseEvent;
    import MainNav;
    import Gallery;
    import MP3Player;
    public class ZDSite extends MovieClip{
        stop();
        private var total:Number = stage.loaderInfo.bytesTotal;
        private var loaded:Number = stage.loaderInfo.bytesLoaded;
        addEventListener(Event.ENTER_FRAME, loading);
        private function loading(event:Event):void {
            //add in load bar here later: Bar_mc.scaleX = loaded/total;
            //add in load text box here late: txtLoaded.text = Math.floor((loaded/total)*100)+ "%";
            //add more load stuff here later
            if (total == loaded) {
                play();
                removeEventListener(Event.ENTER_FRAME, loading);
                //add in function to check if current frame = 60 and stop there
                //add in MainNav, Gallery, and MP3Player to bring objects to stage here
    public class MainNav extends MovieClip {
        //insert Main Nav Stuff here
    public class Gallery extends MovieClip {
        //insert Gallery stuff here
    public class MP3PLayer extends MovieClip {
        //insert MP3 Player stuff here
Any insight would be appreciated. Thanks!

Answer 1

Wow....it is always two steps forward, and one step back with me. I'm missing something and my blurry eyes cannot figure it out. Help!
package {
    import flash.display.MovieClip;
    import NavButton;
    import flash.events.Event;
    public class ZDSite extends MovieClip {
        private var _navButton:NavButton;
        private var total:Number=stage.loaderInfo.bytesTotal;
        private var loaded:Number=stage.loaderInfo.bytesLoaded;
        function ZDSite() {
            //Create the main navigation
            addEventListener(Event.ENTER_FRAME,loadSite);
        private function loadSite(event:Event):void {
            //add in load bar here later: Bar_mc.scaleX = loaded/total;
            //add in load text box here late: txtLoaded.text = Math.floor((loaded/total)*100)+ "%";
            //add more load stuff here later
            if (total == loaded) {
                trace("site loaded, starting opening animation and executing nav build");
                //IntroAnim_mc.play();
                trace(IntroAnim_mc.totalFrames);
                for (var i:Number=0; i < 0; i++) {
                    if(IntroAnim_mc.currentFrame == IntroAnim_mc.totalFrames) {
                        createNav();
                    else {
                        IntroAnim_mc.play();
                removeEventListener(Event.ENTER_FRAME,loadSite);
        //add the nav buttons on the stage
        private function createNav():void {
            _navButton=new NavButton;
            addChild(_navButton);