web页面弹窗遮罩层

 <script type="text/javascript">
       var docEle = function() {
           return document.getElementById(arguments[0]) || false;
       }

       function openNewDiv(_id) {
           var m = "mask";
           if (docEle(_id)) document.body.removeChild(docEle(_id));
           if (docEle(m)) document.body.removeChild(docEle(m));

           //mask遮罩层

           var newMask = document.createElement("div");
           newMask.id = m;
           newMask.style.position = "absolute";
           newMask.style.zIndex = "1";
           _scrollWidth = Math.max(document.body.scrollWidth, document.documentElement.scrollWidth);
           _scrollHeight = Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
           newMask.style.width = _scrollWidth + "px";
           newMask.style.height = _scrollHeight + "px";
           newMask.style.top = "0px";
           newMask.style.left = "0px";
           newMask.style.background = "#33393C";
           newMask.style.filter = "alpha(opacity=40)";
           newMask.style.opacity = "0.40";
           document.body.appendChild(newMask);

           //新弹出层

           var newDiv = document.createElement("div");
           newDiv.id = _id;
           newDiv.style.position = "absolute";
           newDiv.style.zIndex = "9999";
           newDivWidth = 400;
           newDivHeight = 200;
           newDiv.style.width = newDivWidth + "px";
           newDiv.style.height = newDivHeight + "px";
           newDiv.style.top = (document.body.scrollTop + document.body.clientHeight / 2 - newDivHeight / 2) + "px";
           newDiv.style.left = (document.body.scrollLeft + document.body.clientWidth / 2 - newDivWidth / 2) + "px";
           newDiv.style.background = "#EFEFEF";
           newDiv.style.border = "1px solid #860001";
           newDiv.style.padding = "5px";
           newDiv.innerHTML = "弹出层内容 ";

           document.body.appendChild(newDiv);

           //弹出层滚动居中

           function newDivCenter() {
               newDiv.style.top = (document.body.scrollTop + document.body.clientHeight / 2 - newDivHeight / 2) + "px";
               newDiv.style.left = (document.body.scrollLeft + document.body.clientWidth / 2 - newDivWidth / 2) + "px";
           }
           if (document.all) {
               window.attachEvent("onscroll", newDivCenter);
           }
           else {
               window.addEventListener('scroll', newDivCenter, false);
           }

           //关闭新图层和mask遮罩层

           var newA = document.createElement("a");
           newA.href = "#";
           newA.innerHTML = "关闭";
           newA.onclick = function() {
               if (document.all) {
                   window.detachEvent("onscroll", newDivCenter);
               }
               else {
                   window.removeEventListener('scroll', newDivCenter, false);
               }
               document.body.removeChild(docEle(_id));
               document.body.removeChild(docEle(m));
               return false;
           }
           newDiv.appendChild(newA);
       }
</script>

 

调用<a onclick="openNewDiv('newDiv');return false;" style="cursor:pointer">显示弹层</a>
 
//1層遮罩整個IFrame function hideIframe1() { hideIframe(0); } //2層遮罩整個IFrame function hideIframe2() { hideIframe(1); } //3層遮罩整個IFrame function hideIframe3() { hideIframe(2); } //遮罩整個IFrame function hideIframe(level) { var div = document.createElement("div"); var iframe=document.createElement("iframe"); var img=document.createElement("img"); div.id = "InnerDiv"; div.style.width=document.documentElement.scrollWidth +"px" div.style.height=document.documentElement.scrollHeight +"px" div.style.margin="0px"; div.style.padding="0px"; div.style.zIndex="19999"; div.style.position="absolute"; div.style.backgroundColor="black"; div.style.left="0px"; div.style.top="0px"; div.style.filter="alpha(opacity=80)"; div.style.opacity="0.8"; iframe.id = "LoadingIframe"; iframe.style.width="100%"; iframe.style.height="100%"; iframe.style.backgroundColor="black"; img.id = "LoadingImg"; img.style.width="219px"; img.style.height="66px"; img.style.marginTop="-33px"; img.style.marginLeft="-109.5px"; img.style.padding="0px"; img.style.zIndex="20000"; img.style.position="absolute"; img.style.left="50%"; img.style.top="50%"; var path = ""; for(var i=0;i<level;i++) { path += "../"; } img.src=path+"Images/Loading.gif"; div.appendChild(iframe); document.body.appendChild(div); document.body.appendChild(img); } //隱藏整個IFrame function showIframe() { if(document.getElementById("InnerDiv")!=null) { document.body.removeChild(document.getElementById("InnerDiv")); } if(document.getElementById("LoadingImg")!=null) { document.body.removeChild(document.getElementById("LoadingImg")); } } //遮罩整個IFrame function hideIframeNoImg(level) { var div = document.createElement("div"); var iframe=document.createElement("iframe"); div.id = "InnerDiv"; div.style.width=document.documentElement.scrollWidth +"px" div.style.height=document.documentElement.scrollHeight +"px" div.style.margin="0px"; div.style.padding="0px"; div.style.zIndex="19999"; div.style.position="absolute"; div.style.backgroundColor="black"; div.style.left="0px"; div.style.top="0px"; div.style.filter="alpha(opacity=80)"; div.style.opacity="0.8"; iframe.id = "LoadingIframe"; iframe.style.width="100%"; iframe.style.height="100%"; iframe.style.backgroundColor="black"; div.appendChild(iframe); document.body.appendChild(div); } //隱藏整個IFrame function showIframeNoImg() { if(document.getElementById("InnerDiv")!=null) { document.body.removeChild(document.getElementById("InnerDiv")); } }
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