How to use my TV as a second screen wirelessly?

Hi there,

i'm kind of lost in the question how i can use my TV as a second screen without any cable.

What i want:
Move Browser or Browsertabs, Media-Players (Like VCL, Windows-Photoviewer ect) over to my TV. Preferably including Audio but even without would do the job for now.
Either via a simple "stream"-option, like "stream to xbox"-option on media files.
Or via a real second screen i can drag my windows to (like if i'd have the TV connected to my graphics card via HDMI).

Available devices:
Desktop PC running Windows 8
Elitebook running Windows 8
Xbox 360
Samsung 55" ES8090

Can anyone help? What are my options? Is this even possible?