dependiendo lo que quieras hacer exactamente... aqui hay algo...
Código PHP:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>SALTO SALTO SALTO</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script language="JavaScript" type="text/JavaScript">
<!--
function openNewWindow(theURL,winName,features) {
window.open(theURL,winName,features);
}
//-->
</script>
</head>
<body>
<form name="form1" method="post" action="hola.php">
<input type="submit" name="Submit" value="Enviar">
</form>
<form name="form2" method="post" action="adios.php">
<input type="submit" name="Submit2" value="Enviar">
</form>
<p>
<input name="Submit3" type="button" onClick="openNewWindow('adios.php','',
'toolbar=yes,location=yes,status=yes,menubar=yes,scrollbars=yes,resizable=yes,
width=700,heig ht=500')" value="abrir adios">
<input name="Submit4" type="button" onClick="openNewWindow('hola.php','','toolbar=yes,
location=yes,status=yes,menubar=yes,scrollbars=yes,resizable=yes,width=700,
height=500')" value="abrir hola">
</p>
</body>
</html>