Window.Open POST

You cannot trigger a javascript popup and then force a post request.

Three options:

1. Trigger a POST form with target="_blank" using javascript (but this doesn't allow you to disable interface elements such as the menu bar).

2. Open a popup locally, but don't specify a url. Use the result of window.open to alter the document to generate a form, which you'd then post.

   var myWindow = window.open("", "", "height=600,width=800,scrollbars=1,location=no,menubar=no,resizable=1,status=no,toolbar=no");
   myWindow.document.write("Write a form here and then later on trigger it");
   

3. You really shouldn't do any of this. If it's bad for users to copy urls, there's a flaw in your application design.

4. Added after edit: Use the 'empty window' approach, but instead of writing a form and triggering it, do a an XMLHTTPRequest (with POST) in the parent. The result of this request can be used to populate the child-window.

Beside AJAX (jquery.load()), which I would use myself - how about the following approach:

<form method="post" action="edit.jsp" target="_blank">
      <input type="hidden" name="clientId" value="88"/>
      <input type="hidden" name="eventId" value="2"/>
</form>

target = _blank will actually open a new window /tab the posted data will be processed in. Unfortunatelly you can hardly control the new windows appearance.