<script language="javascript" type="text/javascript">
    tinyMCE.init({
        editor_selector : "mceEditor1",
        mode : "textareas"
    });
   
    tinyMCE.init({
        editor_selector : "mceEditor2",
        mode : "textareas",
        theme : "advanced",
        plugins : "devkit,style,layer,table,save,advhr,advimage,advlink,emotions,iespell,insertdatetime,preview,media,searchreplace,print,contextmenu,paste,directionality,fullscreen,noneditable,visualchars,nonbreaking,xhtmlxtras,template",
        theme_advanced_buttons1_add_before : "save,newdocument,separator",
        theme_advanced_buttons1_add : "fontselect,fontsizeselect",
        theme_advanced_buttons2_add : "separator,insertdate,inserttime,preview,separator,forecolor,backcolor",
        theme_advanced_buttons2_add_before: "cut,copy,paste,pastetext,pasteword,separator,search,replace,separator",
        theme_advanced_buttons3_add_before : "tablecontrols,separator",
        theme_advanced_buttons3_add : "emotions,iespell,media,advhr,separator,print,separator,ltr,rtl,separator,fullscreen",
        theme_advanced_buttons4 : "insertlayer,moveforward,movebackward,absolute,|,styleprops,|,cite,abbr,acronym,del,ins,attribs,|,visualchars,nonbreaking,template,|,code",
        theme_advanced_toolbar_location : "top",
        theme_advanced_toolbar_align : "left",
        theme_advanced_path_location : "bottom",
        content_css : "example_full.css",
        plugin_insertdate_dateFormat : "%Y-%m-%d",
        plugin_insertdate_timeFormat : "%H:%M:%S",
        extended_valid_elements : "hr[class|width|size|noshade],font[face|size|color|style],span[class|align|style]",
        external_link_list_url : "example_link_list.js",
        external_image_list_url : "example_image_list.js",
        flash_external_list_url : "example_flash_list.js",
        media_external_list_url : "example_media_list.js",
        template_external_list_url : "example_template_list.js",
        file_browser_callback : "fileBrowserCallBack",
        theme_advanced_resize_horizontal : false,
        theme_advanced_resizing : true,
        nonbreaking_force_tab : true,
        apply_source_formatting : true       
    });

    function fileBrowserCallBack(field_name, url, type, win) {
        // This is where you insert your custom filebrowser logic
        alert("Example of filebrowser callback: field_name: " + field_name + ", url: " + url + ", type: " + type);

        // Insert new URL, this would normaly be done in a popup
        win.document.forms[0].elements[field_name].value = "someurl.htm";
    }
</script>

http://tinymce.moxiecode.com/punbb/viewtopic.php?id=10853

editor tinymce multiple instances

JavaScript