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jQuery(document).on('click', '.classN a[href^="#"]', function(e) {
	var id = jQuery(this).attr('href');
	var $id = jQuery(id);
	if ($id.length === 0) { return; }
	e.preventDefault();
	var pos = jQuery(id).offset().top-50;
	jQuery('body, html').animate({scrollTop: pos});
});