鼠标滚轮 放大缩小图片

js实现鼠标滚轮放大缩小图片

<script>

//放大缩小图片

function sdZoom(o)

{

var zoom=parseInt(o.style.zoom,10)||100;

zoom+=event.wheelDelta/12;

if(zoom>0)o.style.zoom=zoom+'%';

return false;

}

</script>

<!--嵌入js代码-->

<img src="/images/home.jpg" width="600" onmousewheel="return sdZoom(this)" οnlοad="javascript:if(this.width>screen.width-0)this.style.width=screen.width-0;">

<!--图片调用代码-->