Slider to change height of silhouette

1

Hi,

I am trying to build a interactive slider,in which when user drag the slider up the height of silhouette increases by some fix amount n when user drag the slider down the height of silhouette decreases by some fix amount.

the problem i am facing is that when i drag the slider slowly than everything works fine but when i drag the slider faster than the height dont increase or decrease properly.i mean the increment or decrement in the height of silhouette is depending on speed of slider,which i dnt want.

here is the code-

    var bounds:Rectangle = new Rectangle(499.65,260,0,240);

    slider.addEventListener(MouseEvent.MOUSE_DOWN, moveSlider);
    stage.addEventListener(MouseEvent.MOUSE_UP, stopSlider);

    /*****Function to move slider of height bar*****/

    function moveSlider(Event:MouseEvent)
    {
	slider.startDrag(false,bounds);
	stage.addEventListener(MouseEvent.MOUSE_MOVE, changeHeight);
	slider.removeEventListener(MouseEvent.MOUSE_DOWN, moveSlider);
	stage.addEventListener(MouseEvent.MOUSE_UP, stopSlider);
    }


    /*****Function to stop slider of height bar*****/

    function stopSlider(Event:MouseEvent)
    {
	slider.stopDrag();
	slider.addEventListener(MouseEvent.MOUSE_DOWN, moveSlider);
	stage.removeEventListener(MouseEvent.MOUSE_MOVE, changeHeight);
	stage.removeEventListener(MouseEvent.MOUSE_UP, stopSlider);
    }


    /*****Function to increase height & change values in height text box*****/

    function changeHeight(Event:MouseEvent)
     {
	
	if(mouseY > 260 && mouseY < 500)
	{
	
	d = 500 - mouseY;
	var m:Number = d % factor;
	model_height.scaleY += .002;
	model_height.scaleX += .002;
	
	if (m == 0)
	{
		i++;
	
	}

	if (i > 11)
	{
		f++;
		i = 0;
	}

	inches = i;
	height_bottom_txt.text = f + "ft." + " " + inches + " " + "in.";
	}

     }

Thanks
Khushwant