急！急！急！添加了一句JS代码后，div实现了移动，可是里面的textbox无法获得焦点了。

以下是弹出层DIV的代码：
<div id="addExmaPaper" class="popDiv">
        <div id="popDivTittle" class="popDivTittleDiv">
            <div class="left_corner">
            </div>
            <div class="popup_title">
                <asp:Literal ID="Literal1" runat="server">选择考试试卷</asp:Literal>
                <a href="#" onclick="hide();">
                    <img src="../images/close.png" alt="" /></a>
            </div>
            <div class="right_corner">
            </div>
        </div>
        <div class="popBody">
            <div id="selectCondition">
                <ul>
                    <li>
                        <label id="lblPaperName">
                            试卷名称</label>
                        <asp:TextBox ID="txtPaperName" runat="server" ></asp:TextBox>
                    </li>
                    <li id="PaperDomain">
                        <label style="text-align: right">
                            试卷领域</label>
                        <MS:MultipSelection ID="msPaperDomain" CssClass="regularText " runat="server" />
                    </li>
                    <li>
                        <label id="lblPaperType">
                            出卷方式</label>
                        <asp:DropDownList ID="ddlPaperType" CssClass="popDivDropList" runat="server">
                            <asp:ListItem Value="0">考场随机生成</asp:ListItem>
                            <asp:ListItem Value="1">随机生成</asp:ListItem>
                            <asp:ListItem Value="2">人工生成</asp:ListItem>
                        </asp:DropDownList>
                    </li>
                    <li>
                        <label id="lblReleaser">
                            出卷人</label>
                        <asp:TextBox ID="txtReleaser" runat="server"></asp:TextBox></li>
                    <li>
                        <label id="lblCreateStartTime">
                            创建时间</label>
                        <asp:TextBox ID="txtCreateStartTime" runat="server" onfocus="WdatePicker({skin:'whyGreen',dateFmt:'yyyy-MM-dd HH:mm:ss'});"></asp:TextBox><img
                            src="../images/date.png" alt="" style="cursor: pointer; vertical-align: middle" />
                    </li>
                    <li>
                        <label id="lblCreateEndTime">
                            ~</label>
                        <asp:TextBox ID="txtCreateEndTime" runat="server" onfocus="WdatePicker({skin:'whyGreen',dateFmt:'yyyy-MM-dd HH:mm:ss'});"></asp:TextBox><img
                            src="../images/date.png" alt="" style="cursor: pointer; vertical-align: middle" /></li>
                </ul>
            </div>
            <asp:UpdatePanel ID="AddExamPaper" runat="server" UpdateMode="Conditional">
                <ContentTemplate>
                    <div class="bjxnfx_searchButton_div" style="margin-top: 50px;">
                        <asp:Button ID="btnQueryExamPaper" CssClass="search_button" runat="server" BorderColor="#E3ECF3"
                            Text="查询" OnClick="btnQuery_Click" />
                    </div>
                    <div class="cutline2" style="width: 97%;">
                    </div>
                    <div style="clear: both; padding-top: 5px; font-size: 13px">
                     里面是gridview，因为代码太长了不让发帖，我给省去了。  </div>
                </ContentTemplate>
            </asp:UpdatePanel>
        </div>
        <div class="popup_bottom">
            <div class="left_bottomcorner">
            </div>
            <div class="submit" style="padding-top: 7px;">
                <asp:UpdatePanel ID="upSelectPaper" runat="server" UpdateMode="Conditional">
                    <ContentTemplate>
                        <asp:Button ID="btnOK" runat="server" CssClass="confirm_button" Text="确定" OnClick="btnOK_Click" />
                        <asp:Button ID="btnAbandon" runat="server" CssClass="cancel_button" OnClick="btnAbandon_Click"
                            Text="取消" />
                    </ContentTemplate>
                </asp:UpdatePanel>
            </div>
            <div class="right_bottomcorner">
            </div>
        </div>
    </div>
为了实现其可以移动，我添加了如下js    <script type="text/javascript">
        (function () {
            var _addExmaPaper;
            YAHOO.util.Event.onDOMReady(function () {
                _addExmaPaper = new YAHOO.util.DD("addExmaPaper", null, { scroll: false });
        
            });
        })();
    </script>现在问题出来了，当弹出DIV后，DIV所有的textbox都无法获得焦点了。如果注释掉“_addExmaPaper = new YAHOO.util.DD("addExmaPaper", null, { scroll: false });”  则点击时可以获取焦点，但是div不能移动了。如果我为没一个textbox添加事件 onclick="focus();"  则可以实现，但是我有好多页面，不能每一个都添加。是不是哪里写错了，有什么解决办法吗