Just use javasript to write the dynamic content like <script src="...content.php"></script> then content.php is the dynamic content this really help me,share with you
This simply puts the content of content.php within the current document however if content.php is adding some good content onto the pahe you may find that you are not gaining in terms of SEO as the search engines will be unable to see that content that you are including.
I personally think the best way to put dynamic content on a static page is to use a programming language like ColdFusion + Content database. Have content in your DB, use CF to dynamically (and somewhat randomly) generate content, then push that content to your site/page via RSS, XML, etc. Sounds much more complicated than it really is. But this you full control of the content and the final page/site is truly static (Google, etc. have no idea the content was database-driven). Mike