Wikipedia refers to the browser as:
…a software application that enables a user to display and interact with text, images, and other information typically located on a Web page at a website on the World Wide Web or a local area network. Text and images on a Web page can contain hyperlinks to other Web pages at the same or different website. Web browsers allow a user to quickly and easily access information provided on many Web pages at many websites by traversing these links. Web browsers format HTML information for display, so the appearance of a Web page may differ between browsers.
The one area that should not cause accessibilty problems is the browser. Standards and rules have existed for many years that should have negated browser issues. However, as each browser is owned and developed by a different company, each competing for your custom, they have been developed without unification and standardization in mind. This is gradually improving but we still encounter problems moving from on browser to another.
The graph below shows the distribution of browsers visiting the w3c site over the last 2 years. This graph is biased towards ‘alternative’ (to Internet Explorer) browsers because of the content of the site but it does provide a good insight in the future of browser usage.

The graph shows how IE6 is being replaced by IE7 and also that Firefox usage is growing. I will talk about each of the browsers in more depth in a later article.
The point to be taken here is not which browser is better - that is pretty much agreed - it is that that the users accessing your site will be using a number of different browsers and you must do all you can to accomodate each of them or else risk losing part of your audience.





