效果如下：
打开：帝国后台--系统--数据表和系统模型--管理数据表，找到你要修改的数据表，点 管理字段
打开如下图：找到onlinepath 字段：点修改
替换代码到如下图的地方：(代码文章底部提供)
<script>
function dooadd()
{var i;
var str="";
var oldi=0;
var j=0;
oldi=parseInt(document.add.oeditnum.value);
for(i=1;i<=document.add.odownnum.value;i++)
{
j=i+oldi;
str=str+"<tr><td width=7%> <div align=center>"+j+"</div></td><td width=19%><div align=left><input name=odownname[] type=text value=第"+j+"集 size=17></div></td><td width=40%><input name=odownpath[] type=text size=36 id=odownpath"+j+" ondblclick=SpOpenChFile(0,'odownpath"+j+"')><select name=othedownqz[]><option value=''>--地址前缀--</option><?=$newdownqz?></select></td><td width=21%><div align=center><select name=odownuser[] id=select><option value=0>游客</option><?=$ygroup?></select></div></td><td width=13%><div align=center><input name=ofen[] type=text value=0 size=6></div></td></tr>";
}
document.getElementById("addonline").innerHTML="<table width='100%' border=0 cellspacing=1 cellpadding=3>"+str+"</table>";
}
</script>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td height="25">观看地址前缀 :
<input name="onlineurl_qz" type="text" size="32"> <select name="changeonlineurl_qz" onchange="document.add.onlineurl_qz.value=document.add.changeonlineurl_qz.value">
<option value="" selected>选择前缀</option>
<?=$downurlqz?>
</select>
</td>
</tr>
<tr>
<td height="25">选择/上传附件:
<input name="changeonline_url" id="changeonline_url" type="text" size="32"> <input type="button" name="Submit" value="选择" onclick="window.open('ecmseditor/FileMain.php?type=0&classid=<?=$classid?>&infoid=<?=$id?>&filepass=<?=$filepass?>&sinfo=1&doing=1&field=changeonline_url<?=$ecms_hashur[ehref]?>','','width=700,height=550,scrollbars=yes');">
<input type="button" name="Submit" value="复制" onclick="document.getElementById('changeonline_url').focus();document.getElementById('changeonline_url').select();clipboardData.setData('text',document.getElementById('changeonline_url').value);"></td>
</tr>
<tr>
<td><table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#DBEAF5">
<tr>
<td width="7%"> <div align="center">编号</div></td>
<td width="19%"><div align="left">观看名称</div></td>
<td width="40%">观看地址 <font color="#666666">(双击选择)</font></td>
<td width="21%"> <div align="center">权限</div></td>
<td width="13%"> <div align="center">点数</div></td>
</tr>
</table></td>
</tr>
<tr>
<td>
<?php
if($ecmsfirstpost==1)
{
?>
<table width='100%' border=0 cellspacing=1 cellpadding=3>
<?php
$oeditnum=3;
for($opathi=1;$opathi<=$oeditnum;$opathi++)
{
?>
<tr>
<td width='7%'> <div align=center><?=$opathi?></div></td>
<td width='19%'> <div align=left>
<input name=odownname[] type=text value='第<?=$opathi?>集' size=17>
</div></td>
<td width='40%'>
<input name=odownpath[] type=text id='odownpath<?=$opathi?>' size=36 ondblclick="SpOpenChFile(0,'odownpath<?=$opathi?>');">
<select name=othedownqz[]><option value=''>--地址前缀--</option><?=$newdownqz?></select>
</td>
<td width='21%'><div align=center>
<select name=odownuser[] id=select>
<option value=0>游客</option>
<?=$ygroup?>
</select>
</div></td>
<td width='13%'> <div align=center>
<input name=ofen[] type=text id=ofen[] value=0 size=6>
</div></td>
</tr>
<?php
}
?>
</table>
<?php
}
else
{
$oeditnum=0;
$onlinemoviepath="";
if($r[onlinepath])
{
$j=0;
$od_record=explode("\r\n",$r[onlinepath]);
for($i=0;$i<count($od_record);$i++)
{
$j=$i+1;
$od_field=explode("::::::",$od_record[$i]);
//权限
$tgroup=str_replace(" value=".$od_field[2].">"," value=".$od_field[2]." selected>",$ygroup);
//地址前缀
$tnewdownqz=str_replace(" value='".$od_field[4]."'>"," value='".$od_field[4]."' selected>",$newdownqz);
$onlinemoviepath.="<tr><td width='7%'><div align=center>".$j."</div></td><td width='19%'><div align=left><input name=odownname[] type=text value='".$od_field[0]."' size=17></div></td><td width='40%'><input name=odownpath[] type=text value='".ehtmlspecialchars(stripSlashes($od_field[1]))."' size=36 id=odownpath".$j." ondblclick=\"SpOpenChFile(0,'odownpath".$j."');\"><select name=othedownqz[]><option value=''>--地址前缀--</option>".$tnewdownqz."</select><input type=hidden name=opathid[] value=".$j."><input type=checkbox name=odelpathid[] value=".$j.">删</td><td width='21%'><div align=center><select name=odownuser[] id=select><option value=0>游客</option>".$tgroup."</select></div></td><td width='13%'><div align=center><input name=ofen[] type=text value='".$od_field[3]."' size=6></div></td></tr>";
}
$oeditnum=$j;
$onlinemoviepath="<table width='100%' border=0 cellspacing=1 cellpadding=3>".$onlinemoviepath."</table>";
}
echo $onlinemoviepath;
}
?>
</td>
</tr>
<tr>
<td height="25">在线地址扩展数量: <input name="oeditnum" type="hidden" id="oeditnum" value="<?=$oeditnum?>">
<input name="odownnum" type="text" id="odownnum" value="1" size="6"> <input type="button" name="Submit5" value="输出地址" onclick="javascript:dooadd();"></td>
</tr>
<tr>
<td id=addonline></td>
</tr>
</table>
