//Autoscrolling links

$.fn.isInViewport = function()

{

var elementTop = $(this).offset().top;

var elementBottom = elementTop + $(this).outerHeight();

var viewportTop = $(window).scrollTop();

var viewportBottom = viewportTop + $(window).height();

return elementBottom > viewportTop && elementTop < viewportBottom;

};

function scrollToTarget(target)

{

if( target && target.length && !target.isInViewport() )

{

$('html,body').animate({

scrollTop: target.offset().top - $("header").height()

}, 1000);

}

}

$(function ()

{

setTimeout(function ()

{

if (location.href.match("#to-") || $("#form-sent").length > 0)

{

$('html,body').scrollTop(0);

let target;

if (location.href.match("#to-"))

{

const arr = location.href.split("#to-");

const targetName = arr[1];

// Szukaj kolejno po name, id, data-scroll

target =

$("[name='" + targetName + "']").length ?

$("[name='" + targetName + "']")

: $("#" + targetName).length

? $("#" + targetName)

: $("[data-scroll='" + targetName + "']");

}

else

{

target = $("#form-sent");

}

scrollToTarget(target);

}

}, 1000);

$("a[href*='#to-']:not([href='#'])").click(function(e)

{

if (location.pathname.replace(/^//,'') == this.pathname.replace(/^//,'') && location.hostname == this.hostname)

{

e.preventDefault();

const targetName = this.hash.replace("#to-", "");

let target = $("[name='" + targetName + "']");

if (target.length <= 0) target = $("#" + targetName);

if (target.length <= 0) target = $("[data-scroll='" + targetName + "']");

scrollToTarget(target);

}

});

});