I test each web site that I design with Internet Explorer, Firefox and Opera. The current
release as well as the old versions.
Since everybody doesn't have a high resolution screen, I make sure that these sites
display well on lower, as well as higher resolution screens. This helps insure that the
site is aesthetically pleasing for all visitors.
Speed is also a top priority. And the number one reason that web pages load slow is
inefficient graphics. So I focus on making each image load as quickly as possible. One
thing's for sure; nobody ever complains about a web site that loads too fast.