Adware:Adware (or spyware) is a small program that is designed to show advertisements (in various form and degrees of intrusiveness) on your computer. It often reports personal information back to its owners. As a result your sense of privacy can be violated.
EliteMedia is parasitic advertising software, which installs itself through a number of deceptive methods, including downloader Trojans, and browser security exploits. Once installed, EliteMedia will display large numbers of popup adverts, and can be difficult to manually remove. It is reported that many EliteMedia popups are adverts for partypoker.com and other online casinos.
Technical details (How to remove EliteMedia(pop up))