import flash.net.FileReference;

var listener:Object = new Object();

listener.onSelect = function(file:FileReference):Void {
    trace("onSelect: " + file.name);
}

listener.onCancel = function(file:FileReference):Void {
    trace("onCancel");
}

listener.onOpen = function(file:FileReference):Void {
    trace("onOpen: " + file.name);
}

listener.onProgress = function(
file:FileReference, bytesLoaded:Number, bytesTotal:Number):Void {
    trace("onProgress with bytesLoaded: "
 + bytesLoaded + " bytesTotal: " + bytesTotal);
}

listener.onComplete = function(file:FileReference):Void {
    trace("onComplete: " + file.name);
}

listener.onIOError = function(file:FileReference):Void {
    trace("onIOError: " + file.name);
}

var fileRef:FileReference = new FileReference();
fileRef.addListener(listener);
var url:String = 
"http://www.macromedia.com/platform/whitepapers/platform_overview.pdf";
if(!fileRef.download(url, "FlashPlatform.pdf")) {
    trace("dialog box failed to open.");
}