Hi CloudMindAcc
Thank you for your feedback in regards to AccountRight and the In Tray.
I have marked your idea as Already in Product as you can switch between the windows. To do this you would go open the Bill, select to enlarge the doucment, using the Windows button at the top of the screen, select the required option i.e. Purchases - New Service. This would allow you to toggle between the windows or have both of them up on the screen at the same time.
Also ALT + Tab is a Windows function to switch between windows. As all the In Tray documents are all within the same Windows window i.e. within the same application the switch to option would not currently work. Next time you do it take a look at the Windows Task bar, you will see that with the In Tray and you documents open you only have the one AccountRight window. However in saying that I do like you thinking about the Alt + Tab feature.
Do let us know what you think about the Window Drop Down function and does it complete the required task?