feat(right-banner): banner 'right' version uses iframe
feat(top-banner): 'top' banner renders in iframe
feat(css): shadows and background for center banner styled
fix(css): banners are only shown when content is parsed
feat(html): containing div around iframe and background
fix(JS): fixed bug in iframe removing function
fix(js): fixed typo in previous commit
fix(js): fixed bug in banner removal
fix(right-banner): fixed positioning of right banner in quirks mode
fix(IE): position of right banner for old IEs
fix(IE): position of right banner
fix(IE): another position fix for IE's right banner
fix(IE): use different mouseovers for right banner in old IEs
fix(IE): fix banner right positioning issue in IE9
fix(IE): fix for mouseover on right banner in old IE
fix(IE): fix for box shadow in IE9
fix(IE): fix center banner positioning in IE6 standard mode
fix(JS): fix typo in banner javascript
fix(JS): fix typo in javascript
fix(IE): adjust background height for IE6