title: showModalDialog easy alternative?
body: <p>I'm currently doing a migration of my client's application and i'm having troubles with the showmodaldialog.</p>
  
  <p>What I want is an alternative that don't cause to many changes on the application and easy to implement.</p>
  
  <p>The problem is that the parent window has to communicate with the child. The child is always a JSP that has combos, text boxes, etc, and the entered data is needed in the parent JSP.</p>