http://www.sgbuyonline.com/apparels/luxuryhaven.html I think this website is hiding the Ads by Google tagline by using div. Is it a violation?
According to https://www.google.com/adsense/support/bin/answer.py?hl=en&answer=48182 ... Note the "any portion".
I don't think it's worth to loose your adsense acc just for cheating like this guy. People know ad format anyway.