背景图只显示一次，不循环，另外还有一个是PHP下的换行显示

<script type="text/javascript"><!--
google_ad_client = "pub-4490194096475053";
/* 内容页,300x250,第一屏 */
google_ad_slot = "3685991503";
google_ad_width = 300;
google_ad_height = 250;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>背景图只显示一次，不循环 这个用一个CSS就搞定

.{
background-repeat:no-repeat;
}

PHP后台就是一个表单域textarea，输入时候要回车时候就回车

前台<?php $text = $res_now['oem_no'];
$text = str_replace("&","&",$text);
$text = str_replace(" <","<",$text);
$text = str_replace(">",">",$text);
$text = str_replace("/n"," <br / >",$text);
$text = str_replace("/r","",$text);
echo($text);
 ?>
这样就可以