That system is REALLY good.
To anyone who doesn't visit it; it adds furigana on the top of kanji. Nice tool.
I suggest also to go to anime websites, such as the official japanese naruto page.
www,tv-tokyo.co.jp/anime/naruto/
Those websites will have a large percentage of the traffic as children/teens, so it probably won't be too hard to read.
My dad put a parental control on MY PC so I can't check it out for you, sorry.