求正则表达式（50分答谢，通过立即给分，在线等！)
<table cellspacing="0" cellpadding="0" width="100%" border="0">
  <tr>
  <td valign="top">
  <table cellspacing="0" cellpadding="0" class="input-table">
  <tr>
  <td class="input-tdlable" nowrap width="20%">
  申请人
  </td>
  <td valign="middle" class="input-tdinput" width="30%">
  <reap:ReapTextBox ID="ctl_CODE" runat="server" AllowEmpty="false" ShowMessageWithValidationSummary="true"
  MaxLen="40" Title="申请人" IsFlowContorl="true"></reap:ReapTextBox>
  </td>
  <td class="input-tdlable" nowrap width="20%">
  请假天数
  </td>
  <td valign="middle" class="input-tdinput" width="30%">
  <reap:ReapTextBox ID="ctl_Days" runat="server" AllowEmpty="false" ShowMessageWithValidationSummary="true"
  TxtType="Int" IsFlowContorl="true" Title="请假天数"></reap:ReapTextBox>
  </td>
  </tr>  
  <tr>
  <td class="input-tdlable" nowrap width="20%">
  请假内容
  </td>
  <td valign="middle" class="input-tdinput" colspan="3" width="80%">
  <reap:ReapTextBox ID="ctl_MEMO" runat="server" ShowMessageWithValidationSummary="true"
  MaxLen="1024" Title="请假内容" IsFlowContorl="true" Height="52px" Width="398px"></reap:ReapTextBox>
  </td>
   
  </tr>
  <tr> 
  <td valign="middle" class="input-tdinput" colspan="4" width="100%"> 
  <reap:WfAdvice ID="WfAdvice1" runat="server" Width="680" Hight="150"/> 
  </td> 
  </tr> 
  <asp:ValidationSummary ID="ValidationSummary1" ShowMessageBox="True" ShowSummary="False"
  runat="server"></asp:ValidationSummary>
  <input IsFlowContorl="true" type="hidden" id="ctl_ATTR1" name="ATTR1" runat="server">
  <input type="hidden" id="ctl_ATTR2" name="ATTR2" runat="server">
  <input type="hidden" id="ctl_ATTR3" name="ATTR3" runat="server">
  <input type="hidden" id="ctl_ATTR4&q