ActionScript 2.0 :: Resize The Mc Best To The Users Screen Resolution?

i have this code that loads my large images on my site but it does not reduce them it shows the image with original resol only so if the user looks an image that's resol is 1600*1200 and their own screen resol is 1024*768 then they cannot see the images all part. so what i want is to implement a "reduce to best fit if their screen resol is lesser then the image resol" feature for this code. this is the code that loads the large movieclip

Code:
var mcl2:MovieClipLoader = new MovieClipLoader();
var mcl_listener2:Object = new Object();
mcl2.addListener(mcl_listener2);

[Code]....