iPad の User Agent ユーザーエージェント
-Mozilla/5.0(iPad; U; CPU iPhone OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B314 Safari/531.21.10
-Ref.
--How to Use Gmail's Attractive New Tablet-Friendly Interface on Your Regular Old Computer
--http://lifehacker.com/5508260/how-to-use-gmails-attractive-new-tablet+friendly-interface-on-your-regular-old-computer