function customcode() {
  Drupal.editor.editor.on('toolbarLoaded',function() {
    var customcodeButton = {type: 'push',label: 'Insert Custom code', value: 'insertcustomcode'};
    this.toolbar.addButtonToGroup(customcodeButton,'specialbuttons');

    var Dom = YAHOO.util.Dom,
        Event = YAHOO.util.Event,
        Lang = YAHOO.lang;

    var _handleWindowClose = function() {
      var el = this.currentElement[0];
      //set the attribute on the element so we can parse it out afterward.
      var textarea = document.getElementById('embedcustomcode');
      var val = textarea.value;
      el.setAttribute('embeddedcode',encodeURIComponent(textarea.value));
      textarea.value = '';

      this.nodeChange();
    };

    var _handleMediaWindow = function() {
      var el = this.currentElement[0];
      var win = new YAHOO.widget.EditorWindow('insertcustomcode',{width: '625px'});
      var bFlag = false;
      win.setHeader(Drupal.t('Edit Custom code'));
      this.openWindow(win);

      this.on('afterOpenWindow',function() {
        this.get('panel').syncIframe();
      }, this, true);

      if (null != el.getAttribute('embeddedcode')) {
        var textarea = document.getElementById('embedcustomcode');

        if(null != textarea) {
          textarea.value = decodeURIComponent(el.getAttribute('embeddedcode'));
        } else {
          bFlag = true;
        }
      }
    };

    this.toolbar.on('insertcustomcodeClick',function() {
      var el = this._getSelectedElement();

      if(Dom.hasClass(el, 'yui-customcode')) {
        this.currentElement = [el];
        handleInsertIcon.call(this);
        return false;
      }
    },this, true);

    this.cmd_insertcustomcode = function() {
      if (!Dom.hasClass(this._getSelectedElement(), 'yui-customcode')) {
        this.execCommand('insertimage', 'none');
        var el = this._swapEl(this.currentElement[0], 'div', function(el) {
          el.className = 'yui-customcode';
          el.innerHTML = ' ';
        });
        this.currentElement = [el];
      }
      _handleMediaWindow.call(this);
      return [false];
    }

    this.on('editorDoubleClick',function () {
      var el = this._getSelectedElement();
      if (Dom.hasClass(el, 'yui-customcode')) {
        this.currentElement = [el];
        _handleMediaWindow.call(this);
        return false;
      }
    },
    this,true);

    this.on('afterNodeChange',function() {
      if (this._hasSelection()) {
        this.toolbar.disableButton('insertcustomcode');
      } else {
        this.toolbar.enableButton('insertcustomcode');
        var el = this._getSelectedElement();
        if (Dom.hasClass(el, 'yui-customcode')) {
          this.toolbar.selectButton('insertcustomcode');
        } else {
          this.toolbar.deselectButton('insertcustomcode');
        }
      }
    },
    this,true);

    this.on('windowinsertcustomcodeClose', function() {
      _handleWindowClose.call(this);
    },
    this, true);

    this.on('windowRender', function() {
      var body = document.createElement('div');
      body.innerHTML = '<div style="margin-left: 5px">' + Drupal.t('Paste your custom code here:') +
        '</div><textarea id="embedcustomcode" style="width: 95%; margin-left: 5px" rows="10"></textarea>';
      this._windows.insertcustomcode = {
        body: body
      };
    });
  },
  Drupal.editor.editor, true);
}