I appreciate the guideline that if this were a regular web page the users would not like having restrictions on the use of the headers, etc. But for a single purpose page, I still don't think the headers and such are going to be useful, and if people want to multi-task they can open another browser instance.
But now I'm trying to get it to work with Chrome and FireFox, which makes the "windows.open" command trickier, and maybe the user would need to adjust browser controls in some way to get the app to work the way I want it to, and thinking about whether it could be used on tablets so I might need scrollbars.
What I'm hoping for is any input that would help me think about the balance between 1) ease of development for multiple browsers, 2) the "stay focused" approach of no unneeded page header bars, 3) simplicity of not scrolling (which affects the drag and drop) and 4) general hassles of having a non-standard page (no scrollbars, headers, etc.).
Any links, thoughts or suggestions on this would be appreciated.