自适应宽度圆角按钮，导航，用到了滑动门技术
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<h1><strong>CSS自适应宽度圆角按钮</strong></h1>
<a href="#" _fcksavedurl="#"><span>首页</span></a>
<a href="#" _fcksavedurl="#"><span>不是首页</span></a>
<a href="#" _fcksavedurl="#"><span>他也许是首页</span></a>
<a href="#" _fcksavedurl="#"><span>但他一定不是首页</span></a>
<a href="#" _fcksavedurl="#"><span>好了，就这样把。别扯了~</span></a>
<div style=" margin-top:20px;clear:both">文章出处：标准之路(http://www.aa25.cn/css_example/740.shtml)</div>
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留起来，以备查用。
