windows only had ie4 and then 6. mac had a great version of ie5 (really) but ie crashed if you used xmlhttprequest or innerhtml too much. so despite them forci

windows only had ie4 and then 6. mac had a great version of ie5 (really) but ie crashed if you used xmlhttprequest or innerhtml too much. so despite them forcing it on the world since ie4, it only became usable on later ie6 versions (windows service pack ftw), a little later than 2001.