Dhtml:浏览大图时鼠标感应控制层滚动条的移动

核心提示：<div style=overflow:auto; width:300; height:300 id=a><img src=/tech/UploadPic/2010107/2010107231550339.jpg width=800 height=800 onmousemove=a.scrollLef

<div style=overflow:auto; width:300; height:300 id=a>
　<img src=/tech/UploadPic/2010107/2010107231550339.jpg width=800 height=800 onmousemove=a.scrollLeft=event.x*2.5-a.offsetLeft-100;a.scrollTop=event.y*2.5-a.offsetTop-100>
</div>