function sbp_resize() {
	var stage_height = $(window).height();
	var this_height = $('.section.main').height();
	$('.section.main').stop().animate({ top: stage_height / 2 - this_height / 2 - 50 + 'px' }, 800);
	$('html').height(stage_height - 4 + 'px');
};

$(document).ready(function() {
	sbp_resize();
	$(window).resize(function() {
		sbp_resize();	
	});
});