Parent Child windows

I am trying to create a parent child window relationship were the parent window cannot be made active until the child window is closed. Is that possible, if so how can I make this happen?

 

I have not tested this but and haven't done JS in a while but, you could have the parent window set the focus to the child and set a variable. Then have the parent check the variable on focus, if the value is set re-focus the child. To unset the value of the parent window when the child is completed use the "opener" syntax to refer to the parent.

Parent

var focusChild = false;
var theWin;
function OpenWindow() {
  theWin = window.open(...);
  focusChild = true;
  ...
}

function CheckVar() {
 if (focusChild)
   theWin.focus();
}

function FocusParent() {
  focusChild = false;
}

window.onfocus = CheckVar;

Code (markup):

Child

function UnsetFocus() {
  opener.FocusParent();
}

window.onunload = UnsetFocus;

Code (markup):

 

A web app is not as capable as a desktop app and making one act like that often causes problems with usability. If you must, then how about explaining why you want to do this, there are a few things I am thinking of but I doubt they would be suitable - e.g. covering the parent page rendering it useless, using a layer on top of the page instead of a child window... I doubt you can take restrict focus to the parent, at least in a cross browser compatible manner.