$(document).ready(function() {


    $("#mnucategorie li").bind("mouseenter", function() {
        var ul = $(this).children("ul");
        CategoryShow(ul);
    });

    $("#mnucategorie li").bind("click", function() {

        var ul = $(this).children("ul");
        if (CategoryIsOpen(ul))
            CategoryHide(ul);
        else
            CategoryShow(ul);

    });

});

function CategoryShow(element) {
    element.attr("isexpanded", "true");
    element.slideDown();
    element.show();
}

function CategoryHide(element) {
    element.attr("isexpanded", "false");
    element.slideUp();
}

function CategoryIsOpen(element) {
    if (element.attr("isexpanded") == "true")
        return true;
    else
        return false;
}