Every web devoloper runs into this problem at one point and sadly, usually very often. Markup language that doesn’t get translated by certain web browsers. Negelence of the software developer to web standars etc. are still occuring more and more. The browser wars of the late 90’s between Netscape and Microsoft are now named the first browser wars. In this era of the world wide web it still seems logical that all the parties involved were still trying to define the rules of the playing field and therefor not entirely sharing the same web standards because of differing interpretations of what would be most efficient. Remember I’m talking about the period from 1995 onwards, when the World Wide Web was still up for grabs and nobody had heard of Google yet and most people didn’t even own a PC or were not connected to the internet.