Ya viste el codigo fuente?
<html>
<head>
<title>Copy Net S.A.C.</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script LANGUAGE="JavaScript">
<!--
function cerrar()
{
window.close();
}
function pedidos()
{
window.open('tomarpedido.asp','pedidocopynet','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,width=400,height=410');
}
//-->
</script>
</head>
<body leftmargin=0 topmargin=0 scroll=no>
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0" width=100% height=100%>
<param name="movie" value="intro3.swf">
<param name="quality" value="high">
<embed src="intro3.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width=100% height=100%></embed></object>
</body>
</html>
La clave Esta en el width y en el height al ponerlos en el 100%
