JS蒙版/遮罩层

JS

    <script type="text/javascript">
         <!-- 遮罩层 -->
    window.onload = function () {
        function z() {
            if (window.location.href.indexOf("Departments") != -1) return;
            if (z.d) {
                z.d.style.display = "block";
                return;
            }
            var div = document.createElement("div");
            div.style.width = "100%";
            div.style.height = "100%";
            div.style.position = "fixed";
            div.style.top = "0";
            div.style.left = "0";
            div.style.backgroundColor = "#000";
            div.style.opacity = "0.5";
            document.body.appendChild(div);
            z.d = div;
        }
        document.body.onclick = function (e) {
            e = event || window.event;
            if (e.target.innerText == "编辑" || e.target.innerText == "新建" || e.target.innerText == "上传文档") {
                z();
            }
            if (e.target.className == "dxWeb_pcCloseButton_Office2010Blue" || e.target.innerText == "取消" || e.target.innerText == "保存") {
                z.d.style.display = "none";
            }
        }
    }
    </script>