document.write("<table width='770' border='0' align='center' cellpadding='0' cellspacing='0'>");
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   document.write(" <td height='76' colspan='2' background='../main/images/main_r52_c1.jpg'>");
	 document.write("<table width='600' border='0' align='center' cellpadding='0' cellspacing='0'>");
      document.write("<tr>");
        document.write("<td><div align='center'>建议使用IE6.0以上版本 分辨率1024*768<br>");
        document.write("上海电视大学版权所有 未经授权不得复制或建立镜像</div></td>");
     document.write(" </tr>");
    document.write("</table>");
  document.write(" </td>");
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