ScrollStory 介绍
ScrollStory 是个 jQuery UI
部件，用来创建简单的，基于滚动的页面和交互方式。用户滚动到哪个部分就高亮页面的哪个部分。在线演示
主要特性：
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100% style agnostic. Just a collection of often-used scroll-based patterns.
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16+ jQueryUI-style events/callbacks for varIoUs application state events.
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Focus and blur event when an individual story becomes active or inactive.
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Programmatically animated scroll to any item.
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Items can be grouped into categories, with event dispatched as categories change.
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Items filterable by user-specified tags.
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Items aware of their in-viewport status.
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Throttled scroll events and minimal DOM usage.