Cocos HTML5 (V3.0RC2) Modify loading loading page interface

When did the 1.Loading load page call?
A: Called in the Main.js of the project: The code is as follows:
Cc. Loaderscene.preload (g_resources, function () {
Cc.director.runScene (New Storyscene ());
}, this);
Inside the preload function, the load page starts running. (Can go to Code tracking view)

2. How do I customize my loading interface?
A: Enter the Ccloaderscene.js file, by the file name, this is the transition to download the resource page.
File location in: cocos2d-js-v3.0-rc2\frameworks\cocos2d-html5\cocos2d\core\scenes\ccloaderscene.js
The file creates a scene and then creates a dark black background layer (Bglayer) in the Init method.
Continue tracking code Cc._loaderimage, loaded with a base64 encoded picture.
Base64 's picture encoding string is defined in the cocos2d-js-v3.0-rc2\frameworks\cocos2d-html5\base64image.js.
I found a picture (150*150) and made a long list on the http://tool.css-js.com/base64.html website.
Note: If the loading page's picture is too large, the loading loaded text will be obscured. At that time I made a large full-screen image, the result is tragic.