修改评论的方法

<script>
function CheckPl(obj)
{

if(obj.saytext.value=="")
{
alert("您没什么话要说吗？");
obj.saytext.focus();
return false;
}
return true;
}
</script>
<div class="commentsList">
<table width="95%" border="0" align="center" cellpadding="3" cellspacing="0">
<form action="[!--news.url--]e/enews/index.php" method="post" name="saypl" id="saypl" onSubmit="return CheckPl(document.saypl)">
<tr>
<td>用户名：<input name="username" type="text" class="inputText1" id="username" value="" size="20" /></td>
<td style="display:none;"><input name="nomember" type="checkbox" id="nomember" value="1" checked="checked" /></td>
</tr>
<tr>
<td>
<textarea name="saytext" cols="80" rows="3" id="saytext" class="inputText2"></textarea></td>
</tr>
<tr>
<td>
<script src="[!--news.url--]d/js/js/plface.js"></script></td>
</tr>
<tr>
<td>
<input name="imageField" type="image" src="/e/data/images/postpl.gif" border="0" />
<input name="id" type="hidden" id="id" value="[!--id--]" />
<input name="classid" type="hidden" id="classid" value="[!--classid--]" />
<input name="enews" type="hidden" id="enews" value="AddPl" />
<input name="repid" type="hidden" id="repid" value="0" />
<input type="hidden" name="ecmsfrom" value="[!--titleurl--]"></td>
</tr>
</form>
</table>
</div>