[bes]

<input>
<div style="position: fixed; left: 0px; top: 0px; width: 100%; height: 100%; background: lightgray; z-index: 100"></div>
<script>
window.onload = function () {
	setTimeout(function () {
		document.body.removeChild(document.body.children[1]); //style.display = 'none';
	}, 2000);
}
</script>