$(document).ready(function() {

    $(".nav_link").parent().parent().map(function(index, element) {
        $(element).bind("click", function() {
            window.location.replace($(".nav_link")[index].href);
        });

        if($.browser.msie) {
            $(element).hover(
            function() {
                $(element).css("background-image", "url(./img/guzik_on.png)");
                $(element).find(".nav_link").css("color", "#333");
            },
            function() {
                $(element).css("background-image", "url(./img/guzik_off.png)");
                $(element).find(".nav_link").css("color", "#fff");
            });
        }
    });
    
});