Am looking at whatever hacks that are possible to keep a window always on top (apart from window.focus()). Maybe a hidden textbox to which I can set focus etc.
I see this happening in LivePerson (support) whenever a new message arrives. I have legitimate use of this and not to annoy users with ads or anything.
Any hacks for any browsers will do. I am not looking at a complete cross-browser solution. I think window.focus would work for Internet Explorer, though I am yet to test it.