网(LieHuo.Net)教程 帮一朋友临时写的《javascript实现可以拖动的层示例(层拖动，兼容IE/FF) 》，感觉还算简洁，效果也还不错，记下来，避免下次再造轮子。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>Javascript实现可以拖动的层示例 - 网(LIEHUO.NET)</title><style type="text/css">#main div{position:absolute;width:220px;height:150px;border:1px solid #999;}</style><script type="text/javascript">var a;document.onmouseup=function(){if(!a)return;document.all?a.releaseCapture():window.captureEvents(Event.MOUSEMOVE|Event.MOUSEUP);a="";};document.onmousemove=function (d){if(!a)return;if(!d)d=event;a.style.left=(d.clientX-b)+"px";a.style.top=(d.clientY-c)+"px";};function $(o,e){a=o;document.all?a.setCapture():window.captureEvents(Event.MOUSEMOVE);b=e.clientX-parseInt(a.style.left);c=e.clientY-parseInt(a.style.top);}</script></head><body><center>网(LIEHUO.NET)提示，用鼠标拖动下面的层试试看！</center><div id="main"><div style="left:100px;top:100px;background:#fc9;" onmousedown="$(this,event)">1</div><div style="left:400px;top:100px;background:#9cf;" onmousedown="$(this,event)">2</div><div style="left:700px;top:100px;background:#f9c;" onmousedown="$(this,event)">3</div><div style="left:100px;top:300px;background:#9fc;" onmousedown="$(this,event)">4</div><div style="left:400px;top:300px;background:#c9f;" onmousedown="$(this,event)">5</div><div style="left:700px;top:300px;background:#cf9;" onmousedown="$(this,event)">6</div></div></body></html>提示：可修改后代码再运行!
本文原创发表于博客园，作者：丁学，原文地址：http://www.cnblogs.com/dingxue/archive/2009/09/14/1566091.html
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