Fixed session param bug

app/coffeescripts/session.coffee

@@ -20,7 +20,7 @@ class Session
 	
 	query: (url, params, callback) ->
 		q_params = @vk_params
-		for attr in params
-			q_params[attr] = params[attr]
+		$.each params, (key, val) ->
+			q_params[key] = val
 		$.post url, q_params, callback
 		false