原来Google首页上的动态导航效果，之前以为是用

flash的，但通过查看其源代码发现不是，

这个是从中抠出来的代码部分。

详细效果可参见：

http://helpboom.web-69.com/demos/googlehome/-The original Google home page dynamic navigation effects, before the thought with a flash, but by viewing the source code found not, this is to pull out from parts of the code. Detailed results can be found: http://helpboom.web-69.com/demos/googlehome/