Fixed #192: fixed a bug in CCBoot.js that it has a error on Firefox.
Merge branch 'develop-3.0' of git://github.com/cocos2d/cocos2d-html5 into Iss3767_DrawNode
Merge pull request #1705 from dingpinglv/Iss3767_DrawNode

Fixed #192: fixed a bug in CCBoot.js that it has a error on Firefox.