 
 package spark.layouts
 {
-import flash.display.DisplayObject;
-import flash.events.Event; 
-import flash.events.EventDispatcher;
-import flash.geom.Point;
+import flash.events.Event;
 import flash.geom.Rectangle;
 
 import mx.containers.utilityClasses.Flex;

        if (!variableColumnWidth)
            fixedColumnWidth = columnWidth;  // may query typicalLayoutElement, elt at index=0
         
        var contentHeight:Number = llv.minorSize;
        var containerHeight:Number = Math.max(contentHeight, targetHeight);
        var x:Number = llv.start(startIndex);
        var index:int = startIndex;

import mx.events.PropertyChangeEvent;

import spark.components.supportClasses.GroupBase;
import spark.core.NavigationUnit;
import spark.layouts.supportClasses.LayoutBase;
import spark.layouts.supportClasses.LayoutElementHelper;
