Scroll bar problems , please help!

HI,
I am using the following scrollbar , it works pretty fine.
http://www.seemsam.com/scrollbar.fla

The dragger on this scroll bar gets bigger in height or smaller in height according to amount of content inserted in the movieClip.

But my client has an issue, he doesn’t want the dragger to change its size.

I think they are using the following script, is there is any way we can keep the dragger content??





onClipEvent(load)
{
    buttonSize = 0;
    viewHeight = _parent.scroll_bg._height;
    viewWidth = _parent.scroll_bg._x;
    scrollContent = _parent.for_text;
    heightCorect = false;
    mouseWheelHitTest = true;
    wheelStep = 5;
    pageStep = 10;
    pageStep2 = 10;
    pageDelay = 200;
    arroyStep = 10;
    arroyStep2 = 0.5;
    arroyDelay = 3;
    speedDec = 0.65;
    scrollStep = _parent.speed;
    _x = scrollContent._x + viewWidth;
    _y = scrollContent._y;
    dragButtonIsDraging = false;
    scrollPos = 0;
    upButton._y = 0;
    pageUpButton._x = 0;
    pageDownButton._x = 0;
    contentHeight = heightCorect ? scrollContent.height : scrollContent._height;
    scrollHeight = viewHeight - buttonSize * 2;
    dragButtonHeight = viewHeight >= contentHeight ? scrollHeight : viewHeight * scrollHeight / contentHeight;
    dragButton._yscale = dragButtonHeight;
    dragButton._y = buttonSize;
    downButton._y = buttonSize + scrollHeight;
    blanckDown._y = downButton._y;
    blanckUp._x = 0;
    blanckUp._y = 0;
    blanck._x = 0;
    blanck._y = buttonSize;
    blanckDown._x = 0;
    pageUpButton._y = buttonSize;
    blanck._height = scrollHeight;
    blanckUp._visible = viewHeight >= contentHeight ? true : false;
    blanck._visible = viewHeight >= contentHeight ? true : false;
    blanckDown._visible = viewHeight >= contentHeight ? true : false;
    upButton._visible = viewHeight >= contentHeight ? false : true;
    dragButton._visible = viewHeight >= contentHeight ? false : true;
    downButton._visible = viewHeight >= contentHeight ? false : true;
    _parent.drag._visible = viewHeight >= contentHeight ? false : true;
    _parent.down._visible = viewHeight >= contentHeight ? false : true;
    if (viewHeight > contentHeight) 
    {
        _parent.for_text._x = _parent.for_text._x + 5;
    }

    mouseListener = new Object();
    mouseListener.onMouseWheel = function (delta)
    {
        if (!mouseWheelHitTest || scrollContent.hitTest(_root._xmouse, _root._ymouse, false) || hitTest(_root._xmouse, _root._ymouse, false)) 
        {
            dragButton._y = dragButton._y - delta * wheelStep;
            if (dragButton._y < buttonSize) 
            {
                dragButton._y = buttonSize;
            }

            if (dragButton._y > buttonSize + scrollHeight - dragButtonHeight) 
            {
                dragButton._y = buttonSize + scrollHeight - dragButtonHeight;
            }

        }

    }
    ;
    Mouse.addListener(mouseListener);
    curY = 0 - scrollContent._y;
    vY = 0;
    mask = scrollContent._parent.createEmptyMovieClip("mask", scrollContent._parent.getNextHighestDepth());
    with (mask)
    {
        beginFill(255, 50);
        lineStyle(0, 16711935, 100);
        moveTo(scrollContent._x - 1000, scrollContent._y);
        lineTo(scrollContent._x + 1000 + viewWidth, scrollContent._y);
        lineTo(scrollContent._x + 1000 + viewWidth, scrollContent._y + viewHeight);
        lineTo(scrollContent._x - 1000, scrollContent._y + viewHeight);
        endFill();
    }

    scrollContent.setMask(mask);
}

onClipEvent(enterFrame)
{
    blanckUp._visible = viewHeight >= contentHeight ? true : false;
    blanck._visible = viewHeight >= contentHeight ? true : false;
    blanckDown._visible = viewHeight >= contentHeight ? true : false;
    upButton._visible = viewHeight >= contentHeight ? false : true;
    dragButton._visible = viewHeight >= contentHeight ? false : true;
    downButton._visible = viewHeight >= contentHeight ? false : true;
    _parent.drag._visible = viewHeight >= contentHeight ? false : true;
    _parent.down._visible = viewHeight >= contentHeight ? false : true;
    _parent.scroll_bg._visible = viewHeight >= contentHeight ? false : true;
    if (incDelay < 0) 
    {
        dragButton._y = dragButton._y - inc;
        if (dragButton._y < buttonSize) 
        {
            dragButton._y = buttonSize;
        }

        if (dragButton._y > buttonSize + scrollHeight - dragButtonHeight) 
        {
            dragButton._y = buttonSize + scrollHeight - dragButtonHeight;
        }

    }

    --incDelay;
    contentHeight = heightCorect ? scrollContent.height : scrollContent._height;
    scrollHeight = viewHeight - buttonSize * 2;
    dragButtonHeight = viewHeight >= contentHeight ? scrollHeight : viewHeight * scrollHeight / contentHeight;
    dragButton._yscale = dragButtonHeight;
    downButton._y = buttonSize + scrollHeight;
    pageDownButton._y = dragButton._y + dragButtonHeight;
    pageDownButton._yscale = scrollHeight - dragButtonHeight - dragButton._y + buttonSize - scrollPos;
    pageUpButton._yscale = dragButton._y - buttonSize;
    !dragButtonIsDraging;
    if (dragButton._y > buttonSize + scrollHeight - dragButtonHeight) 
    {
        dragButton._y = buttonSize + scrollHeight - dragButtonHeight;
    }

    newY = (dragButton._y - buttonSize) / dragButtonHeight * viewHeight;
    vY = vY + (curY - newY) / scrollStep;
    vY = vY * speedDec;
    curY = curY - vY;
    scrollContent._y = Math.floor(0 - curY + _y);
}

onClipEvent(enterFrame)
{
    if (_parent.down_but == true) 
    {
        with (_parent.scroll)
        {
            if (dragButton._y < buttonSize + scrollHeight - dragButtonHeight - _parent.step) 
            {
                dragButton._y = dragButton._y + _parent.step;
            }
            else 
            {
                dragButton._y = buttonSize + scrollHeight - dragButtonHeight;
            }


        }

    }

    if (_parent.drag_but == true) 
    {
        if (_parent.scroll.dragButton._y > _parent.step) 
        {
            _parent.scroll.dragButton._y = _parent.scroll.dragButton._y - _parent.step;
        }
        else 
        {
            _parent.scroll.dragButton._y = 0;
        }


    }

}










 

Thanks