if (window.innerWidth <= 750 ){
            // in mobile view the logo is allways displayed
            $(".logo").removeClass("navlogo-hide").addClass("navlogo-show");
        }
        // desktop view (window with > 750)
        else {
            if ($("#headerbanner").visible(true) == false) {
                    // headerbanner is not visible => display the logo
                    $(".logo").removeClass("navlogo-hide").addClass("navlogo-show");
                    $(".monate-liste").addClass("d-md-block");
                    $(".titel-liste").addClass("d-md-block");
                }
                else {
                    // headerbanner is visible => hide logo
                    $(".logo").removeClass("navlogo-show").addClass("navlogo-hide");
                    $(".monate-liste").removeClass("d-md-block").addClass("d-none");
                    $(".titel-liste").removeClass("d-md-block").addClass("d-none");
                }

            if ($("footer").visible(true) == false) {
                    // footer is not visible => display the logo
                    $(".monate-liste").addClass("d-md-block");
                    $(".titel-liste").addClass("d-md-block");
                }
                else {
                    // footer is visible => hide logo
                    $(".monate-liste").removeClass("d-md-block");
                    $(".titel-liste").removeClass("d-md-block");
            }

        }