I am working on a book using Pages (iWork 09). I have had no problem with opening two Pages documents I have created and have then both display on the desktop. I readjust their sizes and they sit there side by side. I don't remember making any changes to any preferences. Just recently, whenever I open the first document and it pops onto the desktop. Great. Now, when I go to open the second document that I want to sit right beside the first document, the second document opens okay but the first document that I opened "zips" off the desktop. What have I done wrong? I know I must have made some inadvertent change because I have been doing this (putting both documents side by side ) for months.