         useChromeColor = true;
         
         // set the right assets and dimensions to use based on the screen density
-        switch (authorDensity)
+        switch (applicationDPI)
         {
-            case DeviceDensity.PPI_320:
-            {
-                thumbImageWidth = 58;
-                thumbImageHeight = 58;
-                
-                thumbNormalClass = spark.skins.mobile320.assets.HSliderThumb_normal;
-                thumbPressedClass = spark.skins.mobile320.assets.HSliderThumb_pressed;
-                
+			case DPIClassification.DPI_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 DeviceDensity.PPI_240:
            {
                thumbImageWidth = 44;
                thumbImageHeight = 44;

import flash.display.DisplayObject;
import flash.display.Graphics;

import mx.core.DPIClassification;

import spark.components.Button;
import spark.primitives.Graphic;
