         // that is known to affect layout.
         if (!styleProp ||
             styleProp == "styleName" ||
-            StyleManager.isSizeInvalidatingStyle(styleProp))
+            styleManager.isSizeInvalidatingStyle(styleProp))
         {
             invalidateLabelWidth();
         }

import mx.core.IInvalidating;
import mx.core.IUIComponent;
import mx.core.mx_internal;
import mx.styles.StyleManager;

use namespace mx_internal;

    {
        super();
        
        styleManager.registerInheritingStyle("labelWidth");
        styleManager.registerSizeInvalidatingStyle("labelWidth");
        styleManager.registerInheritingStyle("indicatorGap");
        styleManager.registerSizeInvalidatingStyle("indicatorGap");
        
        showInAutomationHierarchy = true;
        
        layoutObject.target = this;
