javascript 随意拖动的小方块特效

</p> <p>function divblock_event_mousedown(e){<br /> var e, obj, temp;<br /> obj=document.getelementbyid("divblock");<br /> e=window.event?window.event:e;<br /> obj.startx=e.clientx-obj.offsetleft;<br /> obj.starty=e.clienty-obj.offsettop;<br /> document.onmousemove=document_event_mousemove;<br /> temp=document.attachevent?document.attachevent("onmouseup",document_event_mouseup):document.addeventlistener("mouseup",document_event_mouseup,"");<br /> }<br /> function document_event_mousemove(e){<br /> var e, obj;<br /> obj=document.getelementbyid("divblock");<br /> e=window.event?window.event:e;<br /> with(obj.style){<br /> position="absolute";<br /> left=e.clientx-obj.startx+"px";<br /> top=e.clienty-obj.starty+"px";<br /> }<br /> }<br /> function document_event_mouseup(e){<br /> var temp;<br /> document.onmousemove="";<br /> temp=document.detachevent?document.detachevent("onmouseup",document_event_mouseup):document.removeeventlistener("mouseup",document_event_mouseup,"");<br /> } </p> <p>
[ctrl+a 全选 注:如需引入外部js需刷新才能执行]