Using Airplay on rMBP without mirroring everything?

Hey guys, i just bought a new Apple TV 3 and i want to be able to watch a flash video on the Apple TV. I start playing the video on my chrome tab and connect my Macbook to my TV via Airplay and it shows an exact mirror of my Macbook...but i want be able to multitask and write emails, browse the web, etc WHILE watching the video on TV... is that in any way possible?