function mainmenu() {
    //$(" #subnav ul").css({display: "none"}); // Opera Fix
    $("#subnav li").hover(function () {
        $(this).find('ul:first').css({ visibility: "visible", display: "none" }).show(300);
    }, function () {
        $(this).find('ul:first').css({ visibility: "hidden" });
    });
}



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