Check the stats: http://www.w3schools.com/browsers/browsers_stats.asp http://www.philoking.com/2007/11/10/suprising-browser-statistics-people-are-actually-using-safari-on-windows/ According to some, IE already has far less than 50%. Even by the highest estimates, such as: http://en.wikipedia.org/wiki/Browser_usage IE is still only at about 53%, which is not what I'd call 'well over'.

...that...actually would take some thought.