Internet Explorer, created by Microsoft has been the navigating popular Web but during many years. But the breach this being reduced with the launching of Mozilla Firefox, developed by a community of open code. In the last count says that there are 64 million users who use Firefox like their main navigator. They grow of massive form day with day. Therefore, the problem with the compatibility of the navigator is in its maximum importance. The form in which the navigators are constructed, can show to a page slightly different Web. For example, label IFRAME is perfectly in Internet Explorer but it is not in Firefox.
This he is only one of many cases of compatibility of the navigators. Therefore, webmasters must make sure that the page Web can also be seen so much in Internet Explorer and in Firefox. If one does not become, they risk to lose a great percentage of users. There is nothing no worse than to visit a Web site and not to be able to see it in a navigator correctly in particular. The solution for webmasters is to make all the pages XHTML of transition.
The Web sites that are in force by this, have a greater probability of being considered correctly in all the main navigators. XHTML is the today language and I already replace HTML. XHTML was sent in January of the year 2000. XHTML is not a language difficult to learn, is basically identical to HTML, but the main difference is that labels XHTML always have a closing label. For example, a label IMG in HTML does not have closing label. In XHTML label IMG has the closing label/> Original author and source of the article.