actionscript help plz read

[HeThinkzLikeNoOthEr]

onClipEvent (load) {
for (var i=0;i<10;i++) {
_root.attachMovie("Runner", "Runner"+i,i);
}
trail = new Array();
}

onClipEvent(enterFrame) {
runMan = {x:this._x, y:this._y};

trail.push(runMan);

if(trail.length > 10) trail.shift();

for(var i=0;i<trail.length;i++) {
_root["Runner"+i]._x =trail[i].x;
_root["Runner"+i]._y =trail[i].y;
_root["Runner"+i]._alpha =i*10;
_root["Runner"+i]._xscale =13.5;
_root["Runner"+i]._yscale =13.5;
}
}

this is my code..it makes a trail like what i want but..for sum reason the movie clip that i load..loads in a spot that i dont want it to and i dont know how to get rid of it or hide it...can sumone explain to me what my code does??

[VigilanteNighthawk]

Before I read your post, perhaps you should read the forum description?

Besides, I only know AS 3, but your code needs to check whether or not is within the stage boundaries.