鼠标跟随提示框

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<a href="#" target="_blank"><img src="http://pic1.taogogo.info/image/16002/" onmouseover="tip.start(this)" tips="项目中用到的一个简单的JS图片展示效果，支持大图小图原始图展示" /></a> 
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<a href="#" target="_blank" onmouseover="tip.start(this)" tips="11月16日，我有幸参加了11月份的UCD杭州书友会，写了点感受与大家分享……">关于用户研究的一点思考</a> 
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<a href="#" target="_blank" onmouseover="tip.start(this)" tips="早上挤城铁，挤得要命，来了个猛男，大吼一声“我是display:block”的，这一行老子独占了……">WEB重构拾趣</a> 
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鼠标跟随提示框

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