清理html垃圾代码 不起作用。。

<script language=javascript>
<!--
function cleanWordString(html) {
html = html.replace(/ <\/?SPAN[^> ]*> /gi, );
html = html.replace(/ <(\w[^> ]*) class=([^ |> ]*)([^> ]*)/gi, <$1$3 ) ;
html = html.replace(/ <(\w[^> ]*) lang=([^ |> ]*)([^> ]*)/gi, <$1$3 )
html = html.replace(/ <\\?\?xml[^> ]*> /gi, ) ;
html = html.replace(/ <\/?\w+:[^> ]*> /gi, ) ;
html = html.replace(/ /, );
var re = new RegExp( ( <P)([^> ]*> .*?)( <\/P> ) , gi ) ;
html = html.replace( re, <div$2 </div> ) ;
return html
}
//-->
</script>