$(document).ready(function()
{
	var $window = $(window);
	var $container = $('#container');

	setContainerPos();
	$window.resize(setContainerPos);

	function setContainerPos()
	{
		var top = ($window.height() - $container.height()) / 2;
		$container.css('margin-top', Math.max(10, top));
	}
});