Main screen update and loader with transparent background

dev/lib/game/main.js

@@ -109,6 +109,7 @@
 
   StartScreen = ig.Game.extend({
     background: new ig.Image('media/main_screen.png'),
+    clearColor: null,
 
     init: function() {
       ig.input.bind(ig.KEY.ENTER, 'start-game');
@@ -122,6 +123,7 @@
     },
 
     draw: function() {
+      ig.system.context.clearRect( 0 ,0, ig.system.realWidth, ig.system.realHeight );
       this.parent();
       this.background.draw(0, 0);
     }

dev/lib/impact/loader.js

@@ -62,6 +62,7 @@ ig.Loader = ig.Class.extend({
 	
 	
 	draw: function() {
+		ig.system.context.clearRect( 0 ,0, ig.system.realWidth, ig.system.realHeight );
 		this._drawStatus += (this.status - this._drawStatus)/5;
 		var s = ig.system.scale;
 		var w = ig.system.width * 0.6;
@@ -70,7 +71,7 @@ ig.Loader = ig.Class.extend({
 		var y = ig.system.height * 0.5-h/2;
 		
 		ig.system.context.fillStyle = '#000';
-		ig.system.context.fillRect( 0, 0, 480, 320 );
+		//ig.system.context.fillRect( 0, 0, 480, 320 );
 		
 		ig.system.context.fillStyle = '#fff';
 		ig.system.context.fillRect( x*s, y*s, w*s, h*s );