 package spark.components
 {
 
+import mx.core.mx_internal;
+import mx.utils.BitFlagUtil;
+
 import spark.primitives.supportClasses.TextGraphicElement;
+import spark.layouts.supportClasses.LayoutBase;
+
+use namespace mx_internal;
 
 [IconFile("Panel.png")]
 

    //  Properties 
    //
    //--------------------------------------------------------------------------

    //----------------------------------
    //  titleField


    //--------------------------------------------------------------------------
    //
    //  Class constants
    //
    //--------------------------------------------------------------------------
    
    /**
     *  @private
     */
    private static const CONTROLS_PROPERTY_FLAG:uint = 1 << 0;

    /**
     *  @private
     */
    private static const LAYOUT_PROPERTY_FLAG:uint = 1 << 1;

    //--------------------------------------------------------------------------
    //
    //  Constructor
    //
    //--------------------------------------------------------------------------
