             track.height = layoutMeasuredHeight;
             addChild(track);
         }
-        
         if (!thumb)
         {
             thumb = new Button();

{

import mx.core.DPIClassification;
import mx.core.UIComponent;

import spark.components.Button;
import spark.components.VScrollBar;

        super();
        
        useChromeColor = true;
		layoutMeasuredHeight = 20;
		
		// Depending on density set our measured width
        switch (applicationDPI)
        {
			case DPIClassification.DPI_320:
			{
				layoutMeasuredWidth = 12;
				break;
			}
            case DPIClassification.DPI_240:
            {
                layoutMeasuredWidth = 9;
                break;
            }
            default:
            {
                // default PPI160
                layoutMeasuredWidth = 6;
                break;
            }
        }
