function center_menu() {
  // Obtain the first element of menu
  var sum = 0;
  $("nav ul li").each(function(i) {
  
    // Summing the outer widths of menu elements to center
    sum += $(this).outerWidth();
  });    

  // Add padding to the left of the menu to center all included elements
  $("nav ul li").eq(0).css("padding-left", Math.floor((895-sum)/2)+"px");

}