function FishdropMenu() 
{
    $("#top-nav ul").css({ display: "none" }).addClass("subnav"); 

    $("#top-nav li").hover(function() { 
        if (document.all) {
            $(this).find('ul:first').css({visibility: "visible", display: "none"}).show(); 
        } else {
            $(this).find('ul:first').css({visibility: "visible", display: "none"}).slideDown(); 
        }
        $(this).addClass("current");
    }, function() { 
        $(this).find('ul:first').css({visibility: "hidden"});
        $(this).removeClass("current");
    });
}

$(document).ready(function(){
    FishdropMenu(); 
});