How can I vent a bathroom exhaust fan out of the window without it looking hideous?

[mizrachi]

I can not break the outer wall. I must vent thru the window.

I'm considering either an in-window fan, like this one, but am unsure how to run power to the fan while still allowing the window to operate, or a traditional ceiling fan, running the duct work above the ceiling and out the window, but I can't imagine an attractive way to pull this off.

Again, I'd like full functionality of my window and have it look good.

[Dunbar Plumbing]

If you can remove a glass pane, you could build a wood insert and install a horizontal mount fan that direct vents out the window, but it will take considerable work to make it look good.

[mizrachi]

...or I could simply insert the thru-window fan linked above through a cut-away section of window pane but I'm still unsure how I can power the fan while being able to open and close the window.

[Dunbar Plumbing]

For year round application or just winter months. If you're in NYC why would you want to open your windows in cold weather, unless you're in a high rise with no control of the heat levels.

[mizrachi]

This is for a year round application. If the thru-window fan could be powered while still allowing use of the window, that would be best. I'm hesitant to eliminate the use of my window for a number of reasons, hence the difficulty figuring this out. If i decide to seal the window permenantly, I can install and power the fan fairly easily. This is my dilemma.