javascript實現可以拖動的層示例(層拖動，兼容IE/FF)

幫一朋友臨時寫的，感覺還算簡潔，效果也還不錯，記下來，避免下次再造輪子：

運行一下看看

<style type="text/css"> #main div{position:absolute;width:220px;height:150px;border:1px solid #999;} </style> <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>

運行一下看看