Someone

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
   "http://www.w3.org/TR/html4/strict.dtd">
<html>
	<head>
		<title></title>
		<style type="text/css">
			.parent {
				width: 200px;
				height: 200px;
				margin: 0;
				padding: 0;
				border: 1px solid #000;
			}
			.child {
				width: 100px;
				height: 100px;
				margin: 50px 0 0 50px;
				padding: 0;
				border: 1px solid #000;
			}
		</style>
		<script type="text/javascript">
			function doThis() {
				var div_parent = document.getElementById("parent");
				var child = document.createElement("div");
				child.className = "child";
				div_parent.appendChild(child);
			}
		</script>
	</head>
	<body>

		<div><a href="#" onclick="doThis(); return false;">asd</a></div>
		<div id="parent" class="parent"></div>
	</body>
</html>