js改变图片大小——把鼠标放图片上,滚动鼠标滚轮.

<script language="JavaScript">
<!--
//改变图片大小
function resizepic(thispic)
{
if(thispic.width>700) thispic.width=700;
}
//无级缩放图片大小
function bbimg(o)
{
var zoom=parseInt(o.style.zoom, 10)||100;
zoom+=event.wheelDelta/12;
if (zoom>0) o.style.zoom=zoom+'%';
return false;
}
-->
</script>
<P align=center><IMG onmousewheel="return bbimg(this)" height=341
src="photo.gif" onload=javascript:resizepic(this) border=0></P>