diff --git a/haxework/gui/GuiBuilder.hx b/haxework/gui/GuiBuilder.hx
index f05deea..f100625 100755
--- a/haxework/gui/GuiBuilder.hx
+++ b/haxework/gui/GuiBuilder.hx
@@ -12,9 +12,11 @@ import haxework.gui.TextView;
 import haxework.gui.LabelView;
 import haxework.gui.ButtonView;
 import haxework.gui.ToggleButtonView;
+import haxework.gui.ProgressView;
 import haxework.gui.skin.ColorSkin;
 import haxework.gui.skin.ButtonColorSkin;
 import haxework.gui.skin.ButtonBitmapSkin;
+import haxework.gui.skin.ProgressSkin;
 
 import haxework.frame.FrameSwitcher;
 
@@ -49,7 +51,9 @@ class GuiBuilder {
           value = Type.createEnum(e, a[1]);
         } else if (c == "@") {
           var a:Array<String> = s.substr(1).split(":");
-          value = Reflect.field(Provider.get(IResources), a[0]).get(a[1]);
+          //value = Reflect.field(Provider.get(IResources), a[0]).get(a[1]);
+          Reflect.field(Provider.get(IResources), a[0]).bind(a[1], object, field);
+          continue;
         } else if (~/0x[A-Fa-f\d]{6}/.match(value)) {
           value = Std.parseInt(value);
         }
diff --git a/haxework/gui/ProgressView.hx b/haxework/gui/ProgressView.hx
new file mode 100755
index 0000000..86576aa
--- /dev/null
+++ b/haxework/gui/ProgressView.hx
@@ -0,0 +1,29 @@
+package haxework.gui;
+
+class ProgressView extends View {
+
+  public var value(default, set):Int;
+  public var max(default, set):Int;
+
+  public function new() {
+    super();
+    value = 0;
+    max = 1;
+  }
+
+  private function set_value(value:Int):Int {
+    if (this.value != value) {
+      this.value = value;
+      invalidate();
+    }
+    return this.value;
+  }
+
+  private function set_max(value:Int):Int {
+    if (max != value) {
+      max = value;
+      invalidate();
+    }
+    return max;
+  }
+}
\ No newline at end of file
diff --git a/haxework/gui/View.hx b/haxework/gui/View.hx
index ac7233b..54d1107 100755
--- a/haxework/gui/View.hx
+++ b/haxework/gui/View.hx
@@ -261,9 +261,13 @@ class Updater {
   }
 
   public function update(?_):Void {
+    try {
     while (invalidated.length > 0) {
       invalidated.shift().update();
     }
+    } catch (error:Dynamic) {
+      L.e("UPDATE", "", error);
+    }
   }
 
 }
\ No newline at end of file
diff --git a/haxework/gui/skin/ProgressSkin.hx b/haxework/gui/skin/ProgressSkin.hx
new file mode 100755
index 0000000..f87cfc5
--- /dev/null
+++ b/haxework/gui/skin/ProgressSkin.hx
@@ -0,0 +1,21 @@
+package haxework.gui.skin;
+
+import flash.display.Graphics;
+import flash.display.Sprite;
+import haxework.gui.skin.ISkin;
+
+class ProgressSkin implements ISkin<Sprite, ProgressView> {
+
+  public var foreColor:Int;
+  public var backColor:Int;
+
+  public function draw(view:ProgressView):Void {
+    var graphics:Graphics = view.content.graphics;
+    graphics.clear();
+    graphics.beginFill(backColor);
+    graphics.drawRect(0, 0, view.width, view.height);
+    graphics.beginFill(foreColor);
+    graphics.drawRect(0, 0, view.width * (view.value / view.max), view.height);
+    graphics.endFill();
+  }
+}
\ No newline at end of file
diff --git a/haxework/net/BaseLoader.hx b/haxework/net/BaseLoader.hx
index 89b6a6f..a64df6b 100755
--- a/haxework/net/BaseLoader.hx
+++ b/haxework/net/BaseLoader.hx
@@ -28,7 +28,7 @@ class BaseLoader<T> implements ILoader<T> {
     this.data = data;
     callback = new Callback<T>();
     var url:String = this.url;
-    trace(prepareUrl(url));
+    //trace(prepareUrl(url));
     internalRequest(prepareUrl(url));
     return callback;
   }
diff --git a/haxework/net/BatchLoader.hx b/haxework/net/BatchLoader.hx
new file mode 100755
index 0000000..114573f
--- /dev/null
+++ b/haxework/net/BatchLoader.hx
@@ -0,0 +1,52 @@
+package haxework.net;
+
+import haxework.net.callback.Callback;
+import haxework.net.callback.ICallback;
+import haxework.net.ILoader.Method;
+import flash.events.Event;
+import flash.net.URLLoader;
+
+class BatchLoader<T> {
+
+  public var factory:Class<ILoader<T>>;
+
+  public function new(factory:Class<ILoader<T>>) {
+    this.factory = factory;
+  }
+
+  public function GET(urls:Array<String>):ICallback<Array<T>> {
+    var callbacks:Array<ICallback<T>> = urls.map(function(url:String):ICallback<T> {
+      var loader:ILoader<T> = Type.createInstance(factory, []);
+      return loader.GET(url);
+    });
+    return new BatchCallback(callbacks);
+  }
+}
+
+
+class BatchCallback<T> extends Callback<Array<T>> {
+
+  private var data:Array<T>;
+  private var counter:Int;
+
+  public function new(callbacks:Array<ICallback<T>>) {
+    super();
+    data = new Array<T>();
+    counter = callbacks.length;
+    for (i in 0...callbacks.length) {
+      register(callbacks[i], i);
+    }
+  }
+
+  private function register(callback:ICallback<T>, index:Int):Void {
+    callback
+      .success(function(d:T):Void {
+        data[index] = d;
+        if (--counter == 0) callSuccess(data);
+      })
+      .fail(function(error:Dynamic):Void {
+        L.e("BatchLoader", "", error);
+        if (--counter == 0) callSuccess(data);
+      });
+  }
+}
\ No newline at end of file
diff --git a/haxework/net/XmlLoader.hx b/haxework/net/XmlLoader.hx
new file mode 100755
index 0000000..4cd0127
--- /dev/null
+++ b/haxework/net/XmlLoader.hx
@@ -0,0 +1,11 @@
+package haxework.net;
+
+import flash.events.Event;
+import flash.net.URLLoader;
+
+class XmlLoader extends BaseURLLoader<Xml> {
+
+  override private function extrudeResult(e:Event):Xml {
+    return Xml.parse(Std.string(cast(e.currentTarget, URLLoader).data));
+  }
+}
diff --git a/haxework/net/callback/Callback.hx b/haxework/net/callback/Callback.hx
index b53ac4f..57cca66 100755
--- a/haxework/net/callback/Callback.hx
+++ b/haxework/net/callback/Callback.hx
@@ -37,7 +37,7 @@ class Callback<T> implements ICallback<T> {
     try {
       if (_fail != null) _fail(error);
     } catch (error:Dynamic) {
-      trace(error);
+      L.d("Callback", "", error);
     }
   }
 
diff --git a/haxework/resources/Resources.hx b/haxework/resources/Resources.hx
index 6f12f94..24cc516 100755
--- a/haxework/resources/Resources.hx
+++ b/haxework/resources/Resources.hx
@@ -1,14 +1,49 @@
 package haxework.resources;
 
+import haxework.core.Tuple;
+import haxe.ds.StringMap;
 import flash.display.BitmapData;
 
+typedef F = Tuple2<Dynamic, String>
+
+class ResMap<T> extends StringMap<T> {
+
+  private var listeners:Map<String, Array<F>>;
+
+  public function new() {
+    super();
+    listeners = new Map<String, Array<F>>();
+  }
+
+  override public function set(key:String, value:T):Void {
+    super.set(key, value);
+    if (listeners.exists(key)) {
+      for (f in listeners.get(key)) call(f, value);
+    }
+  }
+
+  public function bind(key:String, object:Dynamic, field:String):Void {
+    var f:F = Tuple.two(object, field);
+    if (listeners.exists(key)) {
+      listeners.get(key).push(f);
+    } else {
+      listeners.set(key, [f]);
+    }
+    if (exists(key)) call(f, get(key));
+  }
+
+  private function call(field:F, value:T):Void {
+    Reflect.setProperty(field.first, field.second, value);
+  }
+}
+
 class Resources implements IResources {
 
   public var image(default, null):Map<String, BitmapData>;
   public var color(default, null):Map<String, Int>;
 
   public function new() {
-    image = new Map<String, BitmapData>();
-    color = new Map<String, Int>();
+    image = new ResMap<BitmapData>();
+    color = new ResMap<Int>();
   }
 }
\ No newline at end of file