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    copied!<p>here is the sample code that may help you.</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; </code></pre> <p></p> <pre><code>&lt;mx:Script&gt; &lt;![CDATA[ import mx.collections.ArrayCollection; [Bindable] private var dpFlat:ArrayCollection = new ArrayCollection([ {Region:"Southwest", Territory:"Arizona", Territory_Rep:"Barbara Jennings", Actual:38865, Estimate:40000}, {Region:"Southwest", Territory:"Arizona", Territory_Rep:"Dana Binn", Actual:29885, Estimate:30000}, {Region:"Southwest", Territory:"Central California", Territory_Rep:"Joe Smith", Actual:29134, Estimate:30000}, {Region:"Southwest", Territory:"Nevada", Territory_Rep:"Bethany Pittman", Actual:52888, Estimate:45000}, {Region:"Southwest", Territory:"Northern California", Territory_Rep:"Lauren Ipsum", Actual:38805, Estimate:40000}, {Region:"Southwest", Territory:"Northern California", Territory_Rep:"T.R. Smith", Actual:55498, Estimate:40000}, {Region:"Southwest", Territory:"Southern California", Territory_Rep:"Alice Treu", Actual:44985, Estimate:45000}, {Region:"Southwest", Territory:"Southern California", Territory_Rep:"Jane Grove", Actual:44913, Estimate:45000} ]); ]]&gt; &lt;/mx:Script&gt; &lt;mx:DataGrid id="dg" lockedColumnCount="1" width="500" height="50%" horizontalScrollPolicy="on" rowCount="5" horizontalCenter="0" verticalCenter="0" dataProvider="{dpFlat}"&gt; &lt;mx:columns&gt; &lt;mx:DataGridColumn id="col" width="100" dataField="Region" headerText="Region" &gt; &lt;mx:headerRenderer &gt; &lt;mx:Component id="cmp"&gt; &lt;mx:Image width="25" height="25" source="{imgSource}" click="image1_clickHandler(event)" &gt; &lt;mx:Script&gt; &lt;![CDATA[ import mx.core.Application; [Bindable] private var imgSource:String = "arrow_left.gif"; var flag:Boolean; protected function image1_clickHandler(event:MouseEvent):void { if(flag) { flag = false; Application.application.dg.horizontalScrollPosition = 0; imgSource = "arrow_left.gif"; } else { flag = true; imgSource = "arrow_right.gif"; Application.application.dg.horizontalScrollPosition = 2 } } ]]&gt; &lt;/mx:Script&gt; &lt;/mx:Image&gt; &lt;/mx:Component&gt; &lt;/mx:headerRenderer&gt; &lt;/mx:DataGridColumn&gt; &lt;mx:DataGridColumn id="col1" width="300" dataField="Territory" headerText="Territory"/&gt; &lt;mx:DataGridColumn id="col2" width="300" dataField="Territory_Rep" headerText="Territory_Rep"/&gt; &lt;mx:DataGridColumn id="col3" width="300" dataField="Actual" headerText="Actual" /&gt; &lt;mx:DataGridColumn id="col4" width="300" dataField="Estimate" headerText="Estimate" /&gt; &lt;/mx:columns&gt; &lt;/mx:DataGrid&gt; </code></pre> <p></p>
 

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