IE 10-11
html:
<body>
<div id="stronaglowna">
<div id="social">
</div>
<div class="header">
</div>
</div> <!--END stronaglowna-->
<div id= .....>
...........
..........
</div>
js:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"></script>
<script>
var $root = $('html, body');
$('a').click(function() {
var href = $.attr(this, 'href');
$root.animate({
scrollTop : $(href).offset().top
}, 1000, function() {
window.location.hash = href;
});
return false;
});</script>