hacer scroll con el tamaño de cabecera

set-scroll-conten-jquery.js

    function getHeightHeader() {
        var height = 0;
        if ($('.header-page').length === 1) {
            $headerPage = $('.header-page');
            if ($headerPage.css('position') === 'fixed') {
                height = $headerPage.height();
            }
        }
        return height;
    }
    var sizeHeaderDesktop = getHeightHeader();

    function setScrollContent(domJquerySelected){
        $sectionJqueryDom = domJquerySelected;
        $("html, body").animate(
            {
                scrollTop: $sectionJqueryDom.offset().top - sizeHeaderDesktop
            },
            {
                duration: 1000,
                complete: function() {
                    if (sizeHeaderDesktop !== getHeightHeader()) {
                        sizeHeaderDesktop = getHeightHeader();
                        $("html, body").animate({scrollTop: $sectionJqueryDom.offset().top - sizeHeaderDesktop});
                    }
                }
            }
        );
    }