2039       addClass:function(_element,_class){  argument
2040         if( !pi.util.Element.hasClass(_element,_class) )
2041           pi.util.Element.setClass(_element, pi.util.Element.getClass(_element) + " " + _class );
2046       hasClass:function(_element,_class){  argument
2047         return pi.util.Array.indexOf(pi.util.Element.getClass(_element).split(" "),_class)>-1;
2049       removeClass:function(_element,_class){  argument
2050         if( pi.util.Element.hasClass(_element,_class) ){
2051           var names = pi.util.Element.getClass(_element,_class).split(" ");
2054               pi.util.Array.remove(names,pi.util.Array.indexOf(names,_class)).join(" ")
2371       "hasClass":function(_class){  argument
2372         return pi.util.Element.hasClass( this._parent_.environment.getElement(), _class );
2377       "removeClass":function(_class){  argument
2378         pi.util.Element.removeClass( this._parent_.environment.getElement(), _class );
2381       "toggleClass":function(_class){  argument
2382         pi.util.Element.toggleClass( this._parent_.environment.getElement(), _class );