 import flash.display.DisplayObject;
 import flash.display.Graphics;
 
-import mx.core.DeviceDensity;
+import mx.core.DPIClassification;
 
 import spark.components.Button;
 import spark.primitives.Graphic;

        useChromeColor = true;
        
        // set the right assets and dimensions to use based on the screen density
        switch (authorDensity)
        {
            case DeviceDensity.PPI_320:
            {
                thumbImageWidth = 58;
                thumbImageHeight = 58;
                
                thumbNormalClass = spark.skins.mobile320.assets.HSliderThumb_normal;
                thumbPressedClass = spark.skins.mobile320.assets.HSliderThumb_pressed;
                
                hitZoneOffset = 10;
                hitZoneSideLength = 80;


                
                break;              
            }
            case DPIClassification.DPI_240:
            {
                thumbImageWidth = 44;
                thumbImageHeight = 44;
