LinkButton click doesn't launch URL in the bin-release folder

Question

I have a project "xyz.mxml" in which I use a datagrid. The action script assigns a ItemRenderer of object LinkButtonRenderer
gdColumn.itemRenderer = new ClassFactory(LinkButtonRenderer);
This LinkButtonRenderer.mxml is another file in my project "xyz.mxml"
When I run the application in the Flex builder, it runs fine and on the button click the url opens up. But when I copy all the files out from the "/bin-debug" folder to any  other folder, the button click does not work. If I do a "Export Release Build" all the files get created in the "bin-release" folder. But the link button does not work here.
<?xml version="1.0"?>
<!-- LinkButtonRenderer.mxml -->
<mx:VBox xmlns:mx="http://www.adobe.com/2006/mxml"> 
<mx:Script>
       <![CDATA[
           import mx.events.ListEvent;
           import mx.controls.LinkButton;
           import mx.controls.Button;
        import mx.controls.Alert;
        import flash.net.navigateToURL;
        private function handleClick(eventObj:Event):void
            var u:URLRequest;
            u = new URLRequest(data.url.toString());
            navigateToURL(u, "_self");
              ]]>
     </mx:Script>
        <mx:LinkButton id="url" label="{data.label}" click="handleClick(event);" color="blue"/>
</mx:VBox>

Answer 1

For testing the URL im ausing is  http://google.com
This buton click operation works when I run it from the Flex Builder Application, by clicking on the  "Run" Button, the swf file gets created in the /bin-debug folder.
Once I export it "Export Release build" all the necessary files get created in the /bin-release folder. Here if i open the html file and click on the button nothing happens