Javascript CSS代表；弹出窗口“；不在FireFox中工作

我在网上找到了一些使用div和CSS不透明属性在CSS中实现“弹出”表单的代码。它在IE和Chrome中工作得很好，但在FireFox中却不行。在FireFox中，什么都不会发生。我在主板上看到了一些FireFox CSS的问题，但没有具体的问题。在这个问题上的任何帮助都将是巨大的，因为我对CSS非常陌生。谢谢

[Here][1]是我获取代码供参考的网站

CSS

HTML:

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看起来我的脚本类型标记是jscript，这是我的愚蠢错误。谢谢大家的帮助

您是否检查了Javascript错误控制台或Firebug中是否报告了错误？我在firefox 3.6.13中测试并运行，但在Chrome11b或FF4b11中不运行：

弹出窗口未定义

在FF 3.0.8中对我很好firefox缺少innerText，outerHTML属性和FF中的兄弟节点/子节点可以是空文本节点。我没有看到这些属性被使用，所以是的，您需要在firebug中或者至少在内置的错误控制台（Ctrl+Shift+J）中查找错误。

        #blanket
    {
        background-color: #111;
        opacity: 0.65;
        filter: alpha(opacity=65);
        position: absolute;
        z-index: 9001;
        top: 0px;
        left: 0px;
        width: 100%;
    }
    #popUpDiv
    {
        position: absolute;
        background-color: #eeeeee;
        width: 300px;
        height: 300px;
        z-index: 9002;
    }

<td align="left">
                    <div id="blanket" style="display: none;">
                    </div>
                    <div id="popUpDiv" style="display: none;">
                        <table>
                            <tr>
                                <td>
                                    <a href="#" onclick="popup('popUpDiv')">Close</a>
                                </td>
                            </tr>
                            <tr>
                                <td style="color: Black;">
                                    Please describe the issue:
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    <asp:TextBox ID="txtIssue" runat="server" TextMode="MultiLine" Width="275" Height="200"></asp:TextBox>
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    <asp:Button ID="cmdSend" runat="server" Text="Send" />
                                </td>
                            </tr>
                        </table>
                    </div>
                    <a href="#" onclick="popup('popUpDiv')">Click here to report an issue.</a>
                    <br />
                    <asp:Label ID="lblIssueStatus" runat="server" Text="" Style="color: Red;"></asp:Label>
                </td>

 function toggle(div_id) {
    var el = document.getElementById(div_id);
    if ( el.style.display == 'none' ) { el.style.display = 'block';}
    else {el.style.display = 'none';}
}

    function blanket_size(popUpDivVar) {
    if (typeof window.innerWidth != 'undefined') {
        viewportheight = window.innerHeight;
    } else {
        viewportheight = document.documentElement.clientHeight;
    }
    if ((viewportheight > document.body.parentNode.scrollHeight) && (viewportheight > document.body.parentNode.clientHeight)) {
        blanket_height = viewportheight;
    } else {
        if (document.body.parentNode.clientHeight > document.body.parentNode.scrollHeight) {
            blanket_height = document.body.parentNode.clientHeight;
        } else {
            blanket_height = document.body.parentNode.scrollHeight;
        }
    }
    var blanket = document.getElementById('blanket');
    blanket.style.height = blanket_height + 'px';
    var popUpDiv = document.getElementById(popUpDivVar);
    popUpDiv_height=blanket_height/2-150;//150 is half popup's height
    popUpDiv.style.top = popUpDiv_height + 'px';
}

    function window_pos(popUpDivVar) {
    if (typeof window.innerWidth != 'undefined') {
        viewportwidth = window.innerHeight;
    } else {
        viewportwidth = document.documentElement.clientHeight;
    }
    if ((viewportwidth > document.body.parentNode.scrollWidth) && (viewportwidth > document.body.parentNode.clientWidth)) {
        window_width = viewportwidth;
    } else {
        if (document.body.parentNode.clientWidth > document.body.parentNode.scrollWidth) {
            window_width = document.body.parentNode.clientWidth;
        } else {
            window_width = document.body.parentNode.scrollWidth;
        }
    }
    var popUpDiv = document.getElementById(popUpDivVar);
    window_width=window_width/2-150;//150 is half popup's width
    popUpDiv.style.left = window_width + 'px';
}

    function popup(windowname) {
    blanket_size(windowname);
    window_pos(windowname);
    toggle('blanket');
    toggle(windowname);     
}