aspx页面出现了一个很搞笑的混乱,难道是VS的bug吗?

我有一个td里写 "代"这个字的时候就会出现整个td被撑的很大,会走出外面的DIV,从而页面混乱,样式都是定好的
td里写别的字符的时候什么问题也没有,难道VS和"代"字有仇?还是VS出现bug了?? 
用"$#20129"来写"代字也会出现这样的问题
<body>
    <form id="form1" runat="server">
    <div align="center">
        <div id="div_body">
            <div id="div_top1"></div>
            <div id="div_top2">
                <asp:LinkButton ID="lkb_result"  runat="server" onclick="lkb_result_Click" >自动化测试记录:</asp:LinkButton>
            </div>
            <div style=" margin-left:30px; text-align:left; margin-top:10px" valign="top">
            <table style=" width:600px; border-bottom:solid 1px #6595D6; border-left:solid 1px #6595D6;" cellpadding="0" cellspacing="0">   
                    <tr><td colspan="2" style="text-align: left; height:20px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6; background-color:#E4E8EF">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;增加一条记录</td></tr>
                    <tr><td style=" text-align:center; width:150px;height:20px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">测试网站</td>
                    <td class="td_border">
                        <asp:TextBox ID="txt_ATSite" runat="server"></asp:TextBox></td></tr>
                    <tr><td style="text-align:center; width:150px;height:20px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">测试浏览器</td>
                    <td class="td_border"><asp:TextBox ID="txt_ATBrowser" runat="server"></asp:TextBox></td></tr>
                    <tr><td style="text-align:center; width:150px;height:20px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">测试名称</td>
                    <td class="td_border"><asp:TextBox ID="txt_ATName" runat="server"></asp:TextBox></td></tr>
                    <tr><td style="text-align:center; width:150px;height:20px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">测试时间</td>
                    <td class="td_border">
                    <input type="text" style="width:120px;" id="txt_time" readonly="readonly" />点击
                        <img id="Image" alt="点击此图片添加时间" style="CURSOR: hand; width: 23px; height: 15px;" onclick="popUpCalendar(this,document.getElementById('txt_time'),'yyyy-mm-dd')" src="../Calendar/Images/calendar.gif" />添加时间
                    </td></tr>
                    <tr><td style=" text-align:center;width:150px;height:20px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">
                        测试结果</td>
                    <td class="td_border">
                        <asp:TextBox ID="txt_ATResult" runat="server"></asp:TextBox></td></tr>
                    <tr><td style="text-align:center; width:150px;height:50px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">备注</td>
                    <td class="td_border">
                        <asp:TextBox ID="txt_ATRe" runat="server" Height="60px" Width="440px" 
                            TextMode="MultiLine"></asp:TextBox></td></tr>
                    <tr><td style="text-align:left; width:150px;height:50px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">
                                代</td>
                    <td class="td_border">
                        <asp:TextBox ID="TextBox1" runat="server" Height="209px" Width="440px" 
                            TextMode="MultiLine"></asp:TextBox></td></tr>
       
                    
                </table></div>
            <div id="div_bottom"></div>
        </div>
    </div>
    </form>
</body>我真的快疯了,这个"代" 字搞不定
这是写别的字符的图片
<body>
    <form id="form1" runat="server">
    <div align="center">
        <div id="div_body">
            <div id="div_top1"></div>
            <div id="div_top2">
                <asp:LinkButton ID="lkb_result"  runat="server" onclick="lkb_result_Click" >自动化测试记录:</asp:LinkButton>
            </div>
            <div style=" margin-left:30px; text-align:left; margin-top:10px" valign="top">
            <table style=" width:600px; border-bottom:solid 1px #6595D6; border-left:solid 1px #6595D6;" cellpadding="0" cellspacing="0">   
                    <tr><td colspan="2" style="text-align: left; height:20px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6; background-color:#E4E8EF">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;增加一条记录</td></tr>
                    <tr><td style=" text-align:center; width:150px;height:20px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">测试网站</td>
                    <td class="td_border">
                        <asp:TextBox ID="txt_ATSite" runat="server"></asp:TextBox></td></tr>
                    <tr><td style="text-align:center; width:150px;height:20px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">测试浏览器</td>
                    <td class="td_border"><asp:TextBox ID="txt_ATBrowser" runat="server"></asp:TextBox></td></tr>
                    <tr><td style="text-align:center; width:150px;height:20px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">测试名称</td>
                    <td class="td_border"><asp:TextBox ID="txt_ATName" runat="server"></asp:TextBox></td></tr>
                    <tr><td style="text-align:center; width:150px;height:20px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">测试时间</td>
                    <td class="td_border">
                    <input type="text" style="width:120px;" id="txt_time" readonly="readonly" />点击
                        <img id="Image" alt="点击此图片添加时间" style="CURSOR: hand; width: 23px; height: 15px;" onclick="popUpCalendar(this,document.getElementById('txt_time'),'yyyy-mm-dd')" src="../Calendar/Images/calendar.gif" />添加时间
                    </td></tr>
                    <tr><td style=" text-align:center;width:150px;height:20px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">
                        测试结果</td>
                    <td class="td_border">
                        <asp:TextBox ID="txt_ATResult" runat="server"></asp:TextBox></td></tr>
                    <tr><td style="text-align:center; width:150px;height:50px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">备注</td>
                    <td class="td_border">
                        <asp:TextBox ID="txt_ATRe" runat="server" Height="60px" Width="440px" 
                            TextMode="MultiLine"></asp:TextBox></td></tr>
                    <tr><td style="text-align:left; width:150px;height:50px; border-top:solid 1px #6595D6; border-right:solid 1px #6595D6;">
                                在测试bug 1233(Y*(^</td>
                    <td class="td_border">
                        <asp:TextBox ID="TextBox1" runat="server" Height="209px" Width="440px" 
                            TextMode="MultiLine"></asp:TextBox></td></tr>
       
                    
                </table></div>
            <div id="div_bottom"></div>
        </div>
    </div>
    </form>
</body>