求正则表达式获取表格内容
现在我希望提取一个网页中的表格中所有内容，该怎么写这个正则表达式呢？下面的是表格的相关代码，这个html中包含多个表格，但是这个表的设计信息不同，看看怎么匹配呀，这个表中我只粘贴了一行的内容，其他行一样的：
<table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#b4cdf0" class="p3"> <tr id="ctl00_ContentPlaceHolder1_tabResult" class="color3"> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 药品名称</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 产地名称</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 规格</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 单位</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 批号</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 国药准字</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 有效期</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 包装</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 中包装</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 拆零</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 库存</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 单价</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 限价</td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 购买 </td> <td align="center" bgcolor="#e8eefa" style="height: 28px"> 操作</td></tr> <tr onmouseover="changeHangColor(this)" onmouseout="changeHangColor2(this)" bgcolor="#FFFFFF"> <td height="20"> 注射用盐酸倍他司汀 <span title='安徽华源医药股份有限公司' style='color:green;cursor:pointer;'>来源</span> <span title='控销品种' style='color:red;cursor:pointer;'>控销</span> <a href='PromotionView.aspx?id=&height=250&width=600' class="thickbox"> </a> <input type="hidden" name="ctl00$ContentPlaceHolder1$rptList$ctl00$Hiddenypmc" id="ctl00_ContentPlaceHolder1_rptList_ctl00_Hiddenypmc" value="注射用盐酸倍他司汀" /> </td> <td> <a href="javascript:void(0)" title='国药集团国瑞药业有限公司'> 国药集团国瑞药业.. </a> <input type="hidden" name="ctl00$ContentPlaceHolder1$rptList$ctl00$Hiddencdmc" id="ctl00_ContentPlaceHolder1_rptList_ctl00_Hiddencdmc" value="国药集团国瑞药业有限公司" /> </td> <td align="center"> 20mg <input type="hidden" name="ctl00$ContentPlaceHolder1$rptList$ctl00$Hiddengg" id="ctl00_ContentPlaceHolder1_rptList_ctl00_Hiddengg" value="20mg" /> </td> <td align="center"> 支 <input type="hidden" name="ctl00$ContentPlaceHolder1$rptList$ctl00$Hiddendw" id="ctl00_ContentPlaceHolder1_rptList_ctl00_Hiddendw" value="支" /> </td> <td align="center"> 1203038 </td> <td align="center"> H20030473 <input type="hidden" name="ctl00$ContentPlaceHolder1$rptList$ctl00$Hiddenpzwh" id="ctl00_ContentPlaceHolder1_rptList_ctl00_Hiddenpzwh" value="H20030473" /> </td> <td align="center"> 2014-02-28 </td> <td align="center"> 1000 <input type="hidden" name="ctl00$ContentPlaceHolder1$rptList$ctl00$Hiddenbz" id="ctl00_ContentPlaceHolder1_rptList_ctl00_Hiddenbz" value="1000" /> </td> <td align="center"> 10 </td> <td align="center"> <font color=red>是</font> </td> <td align="center"> 3000 </td> <td align="center" class="green"> 3.1 <input type="hidden" name="hiddenYdj" value='3.1' /> </td> <td align="right" class="red"> 4.10 <input type="hidden" name="ctl00$ContentPlaceHolder1$rptList$ctl00$Hiddenlsj" id="ctl00_ContentPlaceHolder1_rptList_ctl00_Hiddenlsj" value="4.1000" /> </td> <td> <input name="txtBuyNum" value='' type="text" class="formbk8 txtBuyNum" style="width: 30px;" ck='0' kcsl='3000' bz='1000' zbz='10' drugid='10a1567385423712030381' pid='' ypmc='注射用盐酸倍他司汀' cdmc='国药集团国瑞药业有限公司' gg='20mg' /> <font color="blue"> 支 </font></font></td> <td align="center" class="green" width="60px"> <a href='CommodityBack.aspx?drugid=10a1567385423712030381&sid=122535&pid=&height=300&width=500' class="thickbox">反馈</a> <a id="ctl00_ContentPlaceHolder1_rptList_ctl00_LinkButton1" href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$rptList$ctl00$LinkButton1','')"><font color="red">收藏</font></a> </td> </tr> </table>