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javascript弹出窗和悬浮层的写法

今天在写程序时要用弹出层,就复习和搜索了一下javascript弹出窗和悬浮层的写法,在网上找了代码然后修改了一下。把代码贴出来以后用得着:

  <script type="text/javascript">

    function $ () {
        return document.getElementById(arguments[0]) || false;
    }
    function openNewDiv(_id,DivHtml,newDivWidth,newDivHeight)
    {
        var m = "mask";
        if ($(_id)) document.body.removeChild($(_id));
        if ($(m)) document.body.removeChild($(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 = newDivWidth||500;
        newDivHeight = newDivHeight||250;
        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 = DivHtml;
        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($(_id));
            document.body.removeChild($(m));
            return false;
        }
        newDiv.appendChild(newA);
    }
  </script>

原创文章如转载,请注明:转载自火跃工作室
本文网址:http://www.huoyue.org/javascript-alertdiv

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该日志于2010-09-14 16:52由 火跃 发表在CSS+HTML, PHP+mysql分类下, 你可以发表评论。除了可以将这个日志以保留源地址及作者的情况下引用到你的网站或博客,还可以通过RSS 2.0订阅这个日志的所有评论。

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