AjaxUI：鼠标拖拽

NewDocumentbody{padding:0px;text-align:center;font:12pxArial;}div.container{width:100px;height:100px;border:1pxsolid#000;margin:10pxauto;}div#main{width:99px;height:99px;border:1pxsolid#000;background:#050;color:#fff;font:12pxArial;margin:a