Important: This whitepaper applied to Internet Explorer 8 Beta 1, and has been removed. For current documentation, please visit the corresponding page in the Internet Explorer SDK:
HTML and DOM Standards Compliance During Internet Explorer 6's long tenure as the leading market-share holder, Web developers revealed many bugs and inconsistencies in Internet Explorer's DOM. Today, with the Internet Explorer 8 versioning plan, these bugs and inconsistencies are corrected by default, and those customers who choose to opt out of this behavior may enable IE7 compatibility mode.