Comment 51 for bug 68040

Mozilla at first support modal with this [i.e modal = yes in window.open param]
But after a time they removed this feature with the excuse of some security
issues..Now it cannot control its parent processes

I think we can create an Addon now for this to support showmodal feature in
Firefox

Between A point should be noted the gecko engine behaves differ in Linux and
Windows environment

Thanks
Ranju