jQuery(document).ready(function(){
	var _fixedHolder = jQuery('div.fixed-holder'),
		_top = parseInt(jQuery('div.social-medias', _fixedHolder).css('top')),
		_window = jQuery(window);
		
	_window.scroll(scrollThis);
	
	function scrollThis() {
		if (_window.scrollTop() > _top-20) _fixedHolder.addClass('fixed-holder-active');
		else _fixedHolder.removeClass('fixed-holder-active');
	}
});