css实现的弹出窗口始终垂直水平居中效果:
本章节介绍一下如何实现一个弹出窗口实现垂直水平居中效果，无论是否拖动滚动条。
代码实例:
<!DOCTYPE html><html><head><meta charset=" utf-8"><meta name="author" content="http://www.softwhy.com/" /><title>蚂蚁部落</title><style type="text/css">body{ height:1000px;}.antzoen{ position:fixed; width:250px; height:100px; background:#ececec; left:50%; top:50%; margin-left:-125px; margin-top:-50px}</style></head><body><div class="antzoen"></div></body></html> 上面的代码实现了我们的要求，可以实现始终垂直水平居中的效果。
fixed在IE6中不支持，但是现在还用考虑IE6吗。
原文地址是:http://www.softwhy.com/forum.php?mod=viewthread&tid=15473
更多内容可以参阅:http://www.softwhy.com/divcss/
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