Tag removal AIR application for Blog posting

I was really fed up of editing my posts all the time to add "& lt" and "& gt" instead of < and > so I thought to make an air application to do just that.
So here's the code for the tag removal tool:

<mx:Script>
<![CDATA[

import mx.controls.*;
import flash.filesystem.*;
import flash.events.Event;
import flash.net.FileFilter;
import flash.events.*


public var fileToOpen:File = new File();

public var fileData:String;
public var local:String="default";

public function opens():void
{

fileToOpen.browseForOpen("Open");

fileToOpen.addEventListener(Event.SELECT, fileSelected);


}

public function fileSelected(event:Event):void
{
var stream:FileStream = new FileStream();
Alert.show(String(fileToOpen.url));
stream.open(event.target as File, FileMode.READ);

fileData= stream.readUTFBytes(stream.bytesAvailable);
stream.close();

}

private function setFocusOnStart(event:Event):void
{
stage.focus=InteractiveObject(source);
}


public function localStr():String
{
if(local=="default")
{
return source.text
}
else
{return fileData}
}

public function convertTxt(str1:String):void
{

var reg1:RegExp=/(>)/g;
var reg2:RegExp=/(<)/g;

str1=str1.replace(reg1,">");
//Alert.show(str1);
str1=str1.replace(reg2,"<");

result.enabled=true;
result.text=str1;

}

function copyText(e:MouseEvent):void{

System.setClipboard(result.text);
trace("copied: "+result.text);
Alert.show("Text Copied!");
}
]]>
</mx:Script>

<mx:TextArea id="source" selectable="true" wordWrap="true" editable="true" x="76" y="141" width="252" height="200" toolTip="Source..." addedToStage="setFocusOnStart(event)"/>

<mx:Button label="Convert" fontSize="13" fontWeight="bold" x="310" y="91" click="{convertTxt(localStr());}" color="#00BCFA" borderColor="#00BCFA"/>

<mx:TextArea id="result" x="374" y="141" width="252" height="200" editable="true" wordWrap="true" selectable="true" toolTip="Result" enabled="false"/>

<mx:Label y="11" text="String Converter" fontSize="19" fontWeight="bold" color="#00BCFA" fontStyle="normal" textAlign="center" letterSpacing="1" x="244"/>

<mx:VRule x="351" y="141" height="200"/>

<mx:Button x="467" y="102" label="Copy to Clipboard" width="159" height="31" click="copyText(event)" icon="@Embed(source='icons/copy-doc28.png')"/>

<mx:Button x="512" y="61" label="Clear Text" borderColor="#C00000" color="#C00000" click="{local='default';source.text='';source.enabled=true;result.text='';}" icon="@Embed(source='icons/minus-white28.png')"/>

<mx:Button x="76" y="105" label="Browse..." click="{local='1';opens();source.text='\n'+'FILE SELECTED';source.enabled=false;}" icon="@Embed(source='icons/folder28.png')"/>