$(document).ready(function(){
    var cokezerohref = $("#menu ul li:nth-child(4) a").attr("href");
    var lastindex = cokezerohref.lastIndexOf("/");
    $("#menu ul li:nth-child(4) a").attr("href", cokezerohref.substr(0, lastindex));
    
    $("div.header h1 a").attr("href", "index.html");

});