* adjust code.

src/js/messager.js

@@ -127,6 +127,14 @@
         var that = this,
             options = this.options;
 
+        if($.isFunction(message)) {
+            var oldCallback = callback;
+            callback = message;
+            if(oldCallback !== undefined) {
+                message = oldCallback;
+            }
+        }
+
         if(that.isShow) {
             that.hide(function() {
                 that.show(message, callback);
@@ -139,14 +147,6 @@
             that.hiding = null;
         }
 
-        if($.isFunction(message)) {
-            var oldCallback = callback;
-            callback = message;
-            if(oldCallback !== undefined) {
-                message = oldCallback;
-            }
-        }
-
         that.update(message);
 
         var placement = options.placement;