Projects - Flex Builder - Layout Constraint Stretch application

.mxml code:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application
xmlns:mx="http://www.adobe.com/2006/mxml"
horizontalAlign="center" verticalAlign="middle"
width="360" height="200"

>
<mx:Panel
title="My Application" layout="absolute"
width="300" height="130"
>
<mx:Button
id="myButton"
label="A Button"
top="10"
bottom="10"
left="10"
right="10"
/>

</mx:Panel>

</mx:Application>

html code:
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
id="layoutConstraintCenter2" width="360" height="200"
codebase="http://fpdownload.macromedia.com/get/flashplayer/current/swflash.cab">
<param name="movie" value="../layoutConstraintCenter2/layoutConstraintCenter2.swf" />
<param name="quality" value="high" />
<param name="bgcolor" value="#869ca7" />
<param name="allowScriptAccess" value="sameDomain" /><embed src="layoutConstraintCenter2.swf" quality="high" bgcolor="#869ca7"
width="360" height="200" name="layoutConstraintCenter2" align="middle"
play="true"
loop="false"
quality="high"
allowScriptAccess="sameDomain"
type="application/x-shockwave-flash"
pluginspage="http://www.adobe.com/go/getflashplayer">
</embed> </object>