Im using the bookmarkscroll plugin to navigate around my page. I have used the below code to reduce the opacity of elements once the link is clicked. i.e. when the #port element is clicked the page scrolls to the anchor then the other elements change to 20% opacity.

     $("#port").click(function () {

        $("#int").fadeTo("slow", 0.2);

        $("#serv").fadeTo("slow", 0.2);

        $("#port").fadeTo("slow", 1);

        $("#test").fadeTo("slow", 0.2);

        $("#cont").fadeTo("slow", 0.2);

    });

Is there any way to do the same thing with the scrollbar position with jquery? i.e. if the user scrolls the page down 500px you can change the opacity of an element?

I hope this makes sense!

Euan