Look at http://www.bluesky-online.net/index.php
See how the page is NOT vertically aligned? Why's that?
I used tha exact same code I used in http://www.novastella.net ...
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<head>
<title>Chi - מרכז בריאות סיני</title>
<link rel="stylesheet" type="text/css" href="includes/style.css" />
</head>
<body bgcolor="#D3D3D3" valign="middle">
<script src="cz.js"></script>
<table height="100%" align="center">
<tr><td></td></tr>
<tr><Td height="580">
<Table valign="middle" align="center" dir="rtl" width="910" border="0" bgcolor="white" cellpadding=0 cellspacing=0>
<tr name="flash_header">
<td height="190" colspan="3">
<script type="text/javascript">cz0();</script>
</td>
</tr>
<tr name="main_context">
<td height="390" width="200">
<script type="text/javascript">cz1();</script>
</td>
<td height="390" width="710">
<table cellpadding=0 cellspacing=0 border=0 height="320" width="100%">
<tr>
<td width="100%">
<iframe name="content" src="includes/blank.php" width="100%" height="320" frameborder=0 marginheight=0 marginwidth=0>
</iframe>
</td>
</tr>
<tr>
<td height="70" valign="top" bgcolor="#D3D3D3">
<table width="100%" cellpadding=0 cellspacing=0 border=0>
<td height="1" bgcolor="black"></td>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td></tr>
<tr><td></tr></tr>
</body>
</html>