function changeSize() {

sl.addEventListener(SliderEvent.CHANGE, startchangeSize);        

sl.minimum = 1;

sl.maximum = 200;

sl.value = 100;

sl.liveDragging = true;

sl.snapInterval = 0.05;

sl.tickInterval = 50;

 

var w = img_mc.width /100;

var h = img_mc.height /100;

 

function startchangeSize(event:SliderEvent){

 

        img_mc.width = w * event.value;

        img_mc.height = h * event.value;

 

 

        }

}