如何获取到CheckBox后面SPAN的值

<table cellspacing="0" rules="all" border="1" id="ctl00_ContentPlaceHolder1_gvCorpManage" style="border-collapse:collapse; font-family:Verdana, Arial, Helvetica, sans-serif; font-size:12px; color:#d7970a;">
<tr style="color:#666666;background-color:#E1E1E1;font-weight:bold;">
<th scope="col">选择</th><th scope="col">企业号</th><th scope="col">主分号</th><th scope="col">企业名称</th><th scope="col">卡号1</th><th scope="col">卡号2</th><th scope="col">主分标志</th>
</tr><tr style="color:#D7970A;background-color:#F0F0F0;"> <td>
                <input id="ctl00_ContentPlaceHolder1_gvCorpManage_ctl02_chksel" type="checkbox" name="ctl00$ContentPlaceHolder1$gvCorpManage$ctl02$chksel" />            </td><td>
               <span id="ctl00_ContentPlaceHolder1_gvCorpManage_ctl02_Label1">1234567890</span>               
            </td><td>0000</td><td>福建省贸易有限公司</td><td>&nbsp;</td><td>&nbsp;</td><td>
                
                <select name="ctl00$ContentPlaceHolder1$gvCorpManage$ctl02$ddlmainlabel" id="ctl00_ContentPlaceHolder1_gvCorpManage_ctl02_ddlmainlabel" disabled="disabled" style="width:60px;">
<option value=""></option> <option selected="selected" value="0">否</option>
<option value="1">是</option> </select>
            </td>
</tr><tr style="color:#D7970A;background-color:White;">
<td>
                <input id="ctl00_ContentPlaceHolder1_gvCorpManage_ctl03_chksel" type="checkbox" name="ctl00$ContentPlaceHolder1$gvCorpManage$ctl03$chksel" />            </td><td>
               <span id="ctl00_ContentPlaceHolder1_gvCorpManage_ctl03_Label1">1234567890</span>通过: $("input[id*=chksel]").click(function() {
        if ($(this).is(":checked")) {
          $(this).next().text(); //似乎不行
        }
        else {
        }    });
通过可以找到当前点击的checkbox,如何获取到后面的<span id="ctl00_ContentPlaceHolder1_gvCorpManage_ctl02_Label1">1234567890</span>中的值1234567890
感谢!