<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title> New Document </title>
<style>
#descr {visibility:visible}
</style>
</head>
<body>
<div id="descr">asdasd</div>
<script>
alert(document.getElementById("descr").style.visibility)
</script>
</body>
</html>
Так тоже пусто