Ajax applications are praised for their richness, interactivity, and responsiveness, which are achieved by loading data dynamically using the XMLHttpRequest object instead of loading new pages. Among the hype and excitement, a few critical voices have pointed out that Ajax applications break several important browser features, including support for the back/forward button.nn

Website: http://dev2dev.bea.com/pub/a/2006/01/ajax-back-button.html