I used to have a book about website usability ("Website Usability Guide") that was from real case studies, but unfortunately I lent it out and... I don't remember if it had anything about new windows, but I, for one, have been annoyed more than once by my back button apparently being greyed out when the site I was on opened up a new, full-screen window, for no good reason that I could see. (On the other hand, sometimes I've gone off at a tangent while browsing and unable to find my way back to a site I wanted, I've been saved by a site that had, all on its own, opened up a new window.) Perhaps it would be fair to say that, if they are expected, fit the theme of the site, and serve a useful purpose (eg click here to popup a calendar) they are wonderful and useful. If, however, they are unexpected, and don't fit with the theme of the site, they can be irriating and confusing. David. -- If you are not the intended recipient of this e-mail, please preserve the confidentiality of it and advise the sender immediately of any error in transmission. Any disclosure, copying, distribution or action taken, or omitted to be taken, by an unauthorised recipient in reliance upon the contents of this e-mail is prohibited. Somerfield cannot accept liability for any damage which you may sustain as a result of software viruses so please carry out your own virus checks before opening an attachment. In replying to this e-mail you are granting the right for that reply to be forwarded to any other individual within the business and also to be read by others. Any views expressed by an individual within this message do not necessarily reflect the views of Somerfield. Somerfield reserves the right to intercept, monitor and record communications for lawful business purposes.