When building a website it is important to make sure your website works in different browsers:
Firefox overtook Microsoft's Internet Explorer (IE) to become the number one browser in Europe in December 2010 according to StatCounter, the free website analytics company.
The firm's research arm StatCounter Global Stats reports that in December, Firefox took 38.11% of European market share, compared to IE's 37.52%.
"This is the first time that IE has been dethroned from the number one spot in a major territory," commented Aodhan Cullen, CEO, StatCounter. "This appears to be happening because Google's Chrome is stealing share from Internet Explorer while Firefox is mainly maintaining its existing share."
Taken from StatCounter Global Stats