I've been getting redirected today too.
I tried three browsers and got the same obnoxious redirect: IE11, OPERA and Chrome.
Then I did two advance malware scans which made no difference.
Then I checked my registry and deleted a couple keys which I should have gotten rid before but that was still not effective in removing the redirect.
I went back to my OPERA browser and re-enabled the pop-up blocker which did the trick.
Attached is a screen shot of the obnoxious redirect window which plays one ad after another.
Numerous page reloads did nothing to get rid of this thing.
I just tried this site again in IE11 which worked perfectly.......UNTIL I logged in which leads me to believe some SOB has modified your server while in OPERA the site is now working as it should.
The black box in the attached photo is a flashplayer window but there was nothing playing at the time.
It plays ad videos successively.