How programmatically change texture of node in Cocos Creator 1.1.2

How programmatically change texture of node in Cocos Creator 1.1.2?

when I use cocos studio I did like this

var textureNormal = cc.textureCache.addImage(“res/reel_normal.png”);
mainscene.node.getChildByName(“image”).setTexture(textureNormal);

How can I do this in cocos creator?