dedecms はどのようにして画像を画面サイズに適応させるのですか?

//设置全局环境变量$this->Fields['typename'] = $this->TypeLink->TypeInfos['typename'];
@SetSysEnv($this->Fields['typeid'],$this->Fields['typename'],$this->Fields['id'],$this-
>Fields['title'],'archives');

//替换图片Alt为文档标题

$this->Fields['body'] = str_ireplace(array('alt=""','alt=\'\''),'',$this->Fields['body']);
$this->Fields['body'] = preg_replace("@ [\s]{0,}alt[\s]{0,}=[\"'\s]{0,}[\s\S]{0,}[\"'\s]
@isU"," ",$this->Fields['body']);
$this->Fields[&#39;body&#39;] = str_ireplace("<img " ,"<img alt=\"".$this->Fields[&#39;title&#39;]."\"
",$this->Fields[&#39;body&#39;]);

//img标签中加入超宽缩小JS调用代码

$suolue=&#39;οnlοad="javascript:ImgReSize(this)"&#39;;
$this->Fields[&#39;body&#39;] = str_ireplace("<img " ,"<img ".$suolue." ",$this->Fields[&#39;body&#39;]);
//屏蔽height属性
$this->Fields[&#39;body&#39;] = preg_replace(&#39;/<img(.+?)height=(.+?) (.+?)>/i&#39;,"<img$1$3>",$this->Fields[&#39;body&#39;]);

<script language=&#39;javascript&#39;>
function ImgReSize(e)
{
if(e.width>670) // 670可根据你文章的内容区域大小，可调整
{
e.width=670; // 等同上面你设的那个数值
e.style.width="";
}
if(e.height>10)
{
e.style.height="";
}
}
</script>