it's working - thanks a lot!
i misunderstood the encapsulation.
now my code looks like this
var list = $$('ul.menu li').filter(function(el){
return !(el.hasClass('parent') && el.hasClass('active')) && !
el.hasClass('item33') && !el.hasClass('item34') && !
el.hasClass('item35');
});
i still have another question - i want to increase the current
fontsize by one +1px .
with [var current_fontsize = $$('ul.menu').getStyle('font-size'); ] i
get the current fontsize but how do I increase this value by 1px?