js添加锚点

<div name="1F"  id="1F"></div>

<div class="top_img  displayno">

    <a href="javascript:void(0);" onclick="naver('1F')"><img src="top.png" alt=""></a>
</div>

function naver(id){
    var obj = document.getElementById(id);
    var oPos = obj.offsetTop;
    return window.scrollTo(0, oPos);
}