鼠标移动到指定位置，弹出层

//js代码

 function $o(id) { try { return document.getElementById(id); } catch (e) { return null; } }

 var isIE = true; if (!document.all) { isIE = false; }
    var share = null;
    function showshare(sobj, id, eve) {
        share = sobj.parentNode.parentNode.nextSibling;
        if (!isIE) { share = share.nextSibling; }
        var ev = eve || window.event;
        var obj = $o(id);
        obj.style.left = ev.clientX - 120 + "px";
        obj.style.top = ev.clientY + document.documentElement.scrollTop + 10 + "px";
        obj.style.display = "block";
    }

//调用位置

<a href="javascript:void(0)" onclick='showshare(this,"qxgl",event)'>隐私设置</a>

//调用内容

<div id="qxgl">控制显示隐藏</div>