/**
* Manipulates the current Tab count.
*
* internal or globaly depends on settings.
*
* @param integer $i the tabs to be added or remove (negative value for remove)
*
* @return Xiphe\HTML
*/
public function addTabs($i = 1)
{
Core\Config::setHTMLInstance($this);
Core\Config::set('tabs', Core\Config::get('tabs') + $i);
return $this;
}
