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< div style="overflow:auto; width:300; height:300" id=a>
  < img src="圖片地址" width="800" height="800" onmousemove='a.scrollLeft=event.x*2.5-a.offsetLeft-100;a.scrollTop=event.y*2.5-a.offsetTop-100'>
< /div>

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< script>
//Dhtml:用ondrag事件簡(jiǎn)單的實(shí)現(xiàn)鼠標(biāo)拖動(dòng)物件.
var xx=0,yy=0
< /script>
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