//plugin
jQuery.fn.topLink = function(settings) {
    settings = jQuery.extend({
        min: 1,
        fadeSpeed: 200
    }, settings);
    return this.each(function() {
        //listen for scroll
        var el = $(this);
        el.hide(); //in case the user forgot
        $(window).scroll(function() {
            if($(window).scrollTop() >= settings.min)
            {
                el.fadeIn(settings.fadeSpeed);
            }
            else
            {
                el.fadeOut(settings.fadeSpeed);
            }
        });
    });
};