Hi,

I'm making this page:
http://www.alfa1009fm.com/sunabr/html/
and i want that the menu bar (#menup) be in 100% opacity when .ScrollTob is 0, and 10% when is more than 1. I have this:

$(function(){
$(window).scroll(function() {
                            if(.scrollTop = 0) {
                            $("#menup").css("opacity", "1");
                            }
                            else(.scrollTop >= 1) {
                            $("#menup").css("opacity", "0.1");
                            }
                     }
});
});

But this doesn't works...

Any Help?