I got it both page.js amd createform.js need to change.
// Tiny MCE
var width = Dom.get(this.id + "-form").offsetWidth - 100;
var height = YAHOO.env.ua.ie > 0 ? document.body.clientHeight : document.height;
if ( height == undefined ) height = document.body.clientHeight;
height = height - 400
this.widgets.editor = Alfresco.util.createImageEditor(this.id + '-content',
{
height: height,
width: width,
inline_styles: false,
convert_fonts_to_spans: false,
theme: "advanced",
plugins: "table,visualchars,emotions,advhr,print,directionality,fullscreen,insertdatetime",
theme_advanced_buttons1: "bold,italic,underline,strikethrough,|,justifyleft,justifycenter,justifyright,justifyfull,|,formatselect,fontselect,fontsizeselect,forecolor",
theme_advanced_buttons2: "bullist,numlist,|,outdent,indent,blockquote,|,undo,redo,|,link,unlink,anchor,alfresco-imagelibrary,image,cleanup,help,code,removeformat,|,insertdate,inserttime",
theme_advanced_buttons3: "tablecontrols,|,hr,removeformat,visualaid,|,sub,sup,|,charmap,emotions,advhr,|,print,|,ltr,rtl,|,fullscreen",
theme_advanced_toolbar_location: "top",
theme_advanced_toolbar_align: "left",
theme_advanced_statusbar_location: "bottom",
theme_advanced_path: false,
theme_advanced_resizing: true,
siteId: this.options.siteId,
language: this.options.locale
});
this.widgets.editor.addPageUnloadBehaviour(this.msg("message.unsavedChanges.wiki"));
this.widgets.editor.render();