mc directional rotation?

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hi all

can anyone explain to me how i can introduce directional rotation the code below please?

import flash.events.Event;

var acceleration:uint = 10;
for(var i:int=0;i<numChildren;i++)
{
    getChildAt(i).addEventListener(Event.ENTER_FRAME,loop);
    MovieClip(getChildAt(i)).ranx = Math.floor(Math.random()*stage.stageWidth);
    MovieClip(getChildAt(i)).rany = Math.floor(Math.random()*stage.stageHeight);

}

function loop(e:Event):void
{
     e.target.x += ((e.target.ranx-e.target.x)/acceleration);
     e.target.y += ((e.target.rany-e.target.y)/acceleration);
     if (Math.floor(e.target.x) == e.target.ranx || Math.floor(e.target.y) == e.target.rany) 
     {
          e.target.ranx = Math.floor((Math.random()*stage.stageWidth));
          e.target.rany = Math.floor((Math.random()*stage.stageHeight));
     }
        
     if((Math.abs(e.target.x - e.target.ranx)) < 1)
         e.target.x = e.target.ranx;
} 

at present this script sits within an mc - and makes it move randomly - how can i make the target clip/s point in the direction they are going?

i guess it would be in the "e.target" but i have no idea how to write it! and can't find the answer anywhere. any know where to start?