Open New window (pop-up) in JSP

Question

Is there a way to open a new window (pop-up) in JSP (not using Javascript:window.open()).
I basically have a JSP that checks user enter data. The If user enter incorrect data it will redirect to itself with a http session value (f-failed) to indicate the type of data error and display proper error message.
If user enter all correct data then it will display a new window (pop-up) in front of the previous window. All also passing values to the new window!
Whats the window.open() in JSP?
THanks

Answer 1

What about trying this scenario:
1. from your first jsp submit to a modal window
var returnVal = window.showModalDialog("yourServlet","",
"dialogHeight:600px;dialogWidth:800px;status:no;help:no");
2. The servlet sets an error code in the request object i.e. 0 good, -1 bad.
3. forward to a page (I call the page database_status.jsp) and get the error code. With javascipt do this:
<%
// get return code
String returnCode = (String)request.getAttribute("databaseStatus");
%>
window.returnValue = parseInt("<%= returnCode %>");
self.close();
4. read the return code
if(returnVal == 0)
alert('code is good');
or pop up your window.