 Netscape Communicator 5.0 was announced (codenamed "Gromit").But there were significant delays to the release of Netscape's next major version and Communicator therefore aged badly over the many years it was still used.As a result of this, and a more advanced support of HTML 4, CSS, DOM, and ECMAScript by Internet Explorer starting with version 4, the more up-to-date Internet Explorer 5.0 became the market leader.