function showDropDown(dd) {
        //var yyy = new Effect.SlideDown("dropdown_"+dd, {duration:2});
        document.getElementById("dropdown_" + dd).style.display = "block";
    }

    function hideDropDown(dd) {
        //var yyy = new Effect.SlideUp("dropdown_"+dd, {duration:2});
        document.getElementById("dropdown_" + dd).style.display = "none";
    }

    function showDropDown2(dd) {
        //var yyy = new Effect.toggle("dropdown_"+dd, 'Slide', {duration:2});
        document.getElementById("dropdown_" + dd).style.display = "block";
        //alert("showing "+"dropdown_"+dd);
        //document.getElementById("marketsbutton").setAttribute("class", "overclass");
        //document.getElementById("marketsbutton").className = "overclass";
        //document.getElementById("marketsbutton").setAttribute("className", "overclass"); // IE
    }

    function hideDropDown2(dd) {
        //var yyy = new Effect.toggle("dropdown_"+dd, 'Slide', {duration:2});
        document.getElementById("dropdown_" + dd).style.display = "none";
    }

    function select_nav() {
        var nav_links = document.getElementById('dropdown_pc').getElementsByTagName('a');
        var selected = location.pathname;

        for (var i = 0; i < nav_links.length; i++) {
            var link = nav_links[i].pathname;

            // fiddle IE's view of the link
            if (link.substring(0, 1) != '/')
                link = '/' + link;

            if (link == selected)
                nav_links[i].setAttribute('class', 'selected');
        }

        var nav_links2 = document.getElementById('dropdown_hc').getElementsByTagName('a');
        var selected = location.pathname;

        for (var i = 0; i < nav_links2.length; i++) {
            var link = nav_links2[i].pathname;

            // fiddle IE's view of the link
            if (link.substring(0, 1) != '/')
                link = '/' + link;

            if (link == selected)
                nav_links2[i].setAttribute('class', 'selected');
        }

        var nav_links3 = document.getElementById('dropdown_retail').getElementsByTagName('a');
        var selected = location.pathname;

        for (var i = 0; i < nav_links3.length; i++) {
            var link = nav_links3[i].pathname;

            // fiddle IE's view of the link
            if (link.substring(0, 1) != '/')
                link = '/' + link;

            if (link == selected)
                nav_links3[i].setAttribute('class', 'selected');
        }

        var nav_links4 = document.getElementById('dropdown_about').getElementsByTagName('a');
        var selected = location.pathname;

        for (var i = 0; i < nav_links4.length; i++) {
            var link = nav_links4[i].pathname;

            // fiddle IE's view of the link
            if (link.substring(0, 1) != '/')
                link = '/' + link;

            if (link == selected)
                nav_links4[i].setAttribute('class', 'selected');
        }

    }