* @param {Mixed/Object/Array} el The id, element to insert or a DomHelper config to create and insert *or* an array of any of those.\r
* @param {String} where (optional) 'before' or 'after' defaults to before\r
* @param {Boolean} returnDom (optional) True to return the raw DOM element instead of Ext.Element\r
* @param {Mixed/Object/Array} el The id, element to insert or a DomHelper config to create and insert *or* an array of any of those.\r
* @param {String} where (optional) 'before' or 'after' defaults to before\r
* @param {Boolean} returnDom (optional) True to return the raw DOM element instead of Ext.Element\r