bigblock.html

	<style>
		.top-bigblock .block2,
		.top-bigblock.notshow .block1 {
			display: none;
		}
		.top-bigblock .block1,
		.top-bigblock.notshow .block2 {
			display: block;
		}
	</style>
	<script>
	$(document).on('load', function () {
		var $bigBlock = $('.top-bigblock');

		if (!$.cookie("show_bigblock")) {
			$.cookie("show_bigblock", 'notshow', {
				expires: 365,
				path: '/'
			});
		}
	});
	</script>

	<div class="top-bigblock">
		<div class="block1"></div>
		<div class="block2"></div>
	</div>