I have a form with a date field. it should open the calendar downwards, and does so in a window with 5 tabs open. however in a window with 60 tabs it opens upwards - thus loosing it's head and the ability to change month and year. it's near the top of the form. moving the tab from one window and back, without refresh etc, shows the calendar down wards (window with 5 tabs) or upwards (window with 60 tabs) this is looking to me like a Firefox bug - I wondered if anyone has come across this interesting behaviour? I apologise - ths was on my desk top - but i'm away so don't have many details. I can provide screen shots etc when I get back many thanks