Preloader Code Shows Error Message

programming flash
1

hi friends this will be the preloader code what i put initial frame of my flash file.

stop();

onEnterFrame=function(){
        if(_root.bytesLoaded==_root.bytesTotal)
        {
            delete onEnterFrame;
            play();
        }
}

But it shows an error following.

[COLOR=Red]1120: Access of undefined property onEnterFrame.[/COLOR]
[COLOR=Red]1120: Access of undefined property _root.[/COLOR]

what will be the problem can you idetify it means please advice me…

regards
Dinesh…