发布信息后，判断该信息时间然后添加new图片

   <script language="javascript">
        function DateDiff(sDate1, sDate2) {
            var aDate, oDate1, oDate2, iDays
            aDate = sDate1.split("-")
            oDate1 = new Date(aDate[1] + '-' + aDate[2] + '-' + aDate[0])
            aDate = sDate2.split("-")
            oDate2 = new Date(aDate[1] + '-' + aDate[2] + '-' + aDate[0])
            iDays = parseInt(Math.abs(oDate1 - oDate2) / 1000 / 60 / 60 / 24)
            return iDays
        } 
    </script>

 <table border="0" cellpadding="0" cellspacing="0" style="width: 100%; float: left;">
        <asp:Repeater ID="Repeater1" runat="server">
            <ItemTemplate>
                <tr>
                    <td class="news_list ul" style="padding: 5px; line-height: 15px; float: left;">
                        ·<a href="../../../cm_web/common/cmjjjc_ggl_detail.aspx?id=<%# DataBinder.Eval(Container.DataItem, "va") %>&code=<%# DataBinder.Eval(Container.DataItem, "vd") %>"
                            style="text-decoration: none; color: #666;" target="_blank"><%# DataBinder.Eval(Container.DataItem, "vb") %></a>

                        <script type="text/javascript">
                            var myDate = new Date();
                            tyear = myDate.getYear();
                            tmonth = myDate.getMonth() + 1;
                            tdate = myDate.getDate();
                            nowdate = tyear + "-" + tmonth + "-" + tdate;

                            if (DateDiff(nowdate, '<%# DataBinder.Eval(Container.DataItem, "vc") %>') < 7) {

                                document.write("<img src='../html/new_cmjjjc/images/new.gif' />");
                            }
                        </script>
                    </td>
                </tr>
            </ItemTemplate>
        </asp:Repeater>
        <br />
    </table>