  */
 public final class OverlayDepth
 {
-	/**
+    /**
+     *  The default depth value under all Flex overlay elements.
+     *  
+     *  @langversion 3.0
+     *  @playerversion Flash 10
+     *  @playerversion AIR 1.5
+     *  @productversion Flex 4
+     */
+    public static const BOTTOM:Number = 0;
+
+    /**
 	 *  The overlay depth for a drop indicator.
 	 *  
 	 *  @langversion 3.0

	 *  @playerversion AIR 1.5
	 *  @productversion Flex 4
	 */
	public static const DROP_INDICATOR_DEPTH:Number = 100;

	/**
	 *  The overlay depth for a mask object.
	 *  
	 *  @langversion 3.0
	 *  @playerversion Flash 10
	 *  @playerversion AIR 1.5
	 *  @productversion Flex 4
	 */
	public static const MASK_DEPTH:Number = 200;

	/**
	 *  The overlay depth for a focus object.
	 *  
	 *  @langversion 3.0
	 *  @playerversion Flash 10
	 *  @playerversion AIR 1.5
	 *  @productversion Flex 4
	 */
	public static const FOCUS_DEPTH:Number = 300;

	/**
	 *  The default top most overlay depth.
	 *  
	 *  @langversion 3.0
	 *  @playerversion Flash 10
	 *  @playerversion AIR 1.5
	 *  @productversion Flex 4
	 */
	public static const TOPMOST:Number = 10000;
}
}
{
/**
 *  The OverlayDepth class defines the default depth values for 
 *  various overlay elements used by Flex.
 * 
 *  @see spark.components.Group#overlay
 *  @see spark.components.DataGroup#overlay
