Position of Alert Boxes

Does anyone know of a way to position an alert box other than in the center of the screen? I would like to be able to position it in maybe a corner of the screen or centered at the top. Is this possible?

Please help

Thank you

nope, can't reposition the built-in alert()

Some people have made custom "alert" boxes using layers

Ok. Thanks. I'll go that route then.

I have a few custom alert boxes here if you'd like more information

www.huntingground.freeserve.co.uk/style/alert.htm