如何使用TinyMCE文本区域编辑器作为一个类

我有一些TinyMCE文本区域编辑器，用于我的PHP程序，如下所示：

<!-- TinyMCE -->
<script type="text/javascript" src="../jscripts/tiny_mce/tiny_mce.js"></script>
<script type="text/javascript">
    tinyMCE.init({
        // General options
        mode : "textareas",
        theme : "advanced",
        skin : "o2k7",
        plugins : >"autolink,lists,pagebreak,style,layer,table,save,advhr,advimage,advlink,emotions,iespell,i>nsertdatetime,preview,media,searchreplace,print,contextmenu,paste,directionality,fullscree>n,noneditable,visualchars,nonbreaking,xhtmlxtras,template,inlinepopups,autosave",
        // Theme options
        theme_advanced_buttons1 : >"save,newdocument,|,bold,italic,underline,strikethrough,|,justifyleft,justifycenter,justif>yright,justifyfull,|,styleselect,formatselect,fontselect,fontsizeselect",
        theme_advanced_buttons2 : >"cut,copy,paste,pastetext,pasteword,|,search,replace,|,bullist,numlist,|,outdent,indent,bl>ockquote,|,undo,redo,|,link,unlink,anchor,image,cleanup,help,code,|,insertdate,inserttime,>preview,|,forecolor,backcolor",
        theme_advanced_buttons3 : >"tablecontrols,|,hr,removeformat,visualaid,|,sub,sup,|,charmap,emotions,iespell,media,advh>r,|,print,|,ltr,rtl,|,fullscreen",
        theme_advanced_buttons4 : >"insertlayer,moveforward,movebackward,absolute,|,styleprops,|,cite,abbr,acronym,del,ins,at>tribs,|,visualchars,nonbreaking,template,pagebreak,restoredraft",
        theme_advanced_toolbar_location : "top",
        theme_advanced_toolbar_align : "left",
        theme_advanced_statusbar_location : "bottom",
        theme_advanced_resizing : true,
        // Example word content CSS (should be your site CSS) this one removes >paragraph margins
        content_css : "css/word.css",
        // Drop lists for link/image/media/template dialogs
        template_external_list_url : "lists/template_list.js",
        external_link_list_url : "lists/link_list.js",
        external_image_list_url : "lists/image_list.js",
        media_external_list_url : "lists/media_list.js",
        // Replace values for the template plugin
        template_replace_values : {
            username : "Some User",
            staffid : "991234"
        }
    });
</script>
<!-- /TinyMCE -->

现在，我想使用上面的所有代码作为一个类，类似于以下内容：

<textarea id="test" name="test" class="tinymce"></textarea>

我应该如何以及在哪里创建class="tinymce"？

我想在不同php/html程序的许多文本区域中使用这个类。