look at this site fusion outside dot co dot uk under chaircovers / table accesories page you will will notice that the layout looks awful it looks ok in IE but not firefox I used DW 8 layers instead of tables to design the site please advice
DW is not the best at providing valid markup. In any case, always use a modern browser, such as Firefox, to check your page. Never, ever use IE as a reference. It's 11 years behind all other browsers in modern standards and practices.
cheers for the reply whats this valid markup thing ?it looks interesting I got semi good knowldge of programming language
Validation is to be used on every web page. It checks your html and css to make sure you have used proper syntax and that the elements are in the proper order. It does NOT guarantee your page will look as you want but, without proper validation/syntax, there is no guarantee there either.
Basically, it's just a good idea to NOT use a WYSIWYG site creator, but instead use something like Notepad++ and code from scratch. The code will be much cleaner, and best of all, you'll have full control over every aspect of it.