Search Engine dregol.com has hijacked Chrome

IE, Mozilla and Chrome have been hijacked by this search engine.  Norton doesn't even recognize it, because it has disguised itself as the actual IE, Mozilla and Chrome broswers. 

http:// www. dregol . com/?f=1&a=drg_bimmed_15_30&cd=2XzuyEtN2Y1L1QzutDtDtByEyB0EyC0BtA0AyEzy0FtD0D0AtN0D0Tzu0StCtBzyyCtN1L2XzutAtFtCtBtFtCtFtCtN1L1Czu1BtAtN1L1G1B1V1N2Y1L1Qzu2SyBtAyE0A0AtB0A0DtGtBtD0CtCtGtBtCyDyBtGtA0F0CyBtGzzyEzz0CtB0B0AyCyE0A0CtC2QtN1M1F1B2Z1V1N2Y1L1Qzu2SyE0CyEyE0EyE0C0FtGyEtC0AyCtGyEtA0B0EtGzy0FyC0EtGtD0EyD0B0BtDtDtDzztD0Fzy2QtN0A0LzuyE&cr=303393856&ir=

 

How can it be eradicated?