Include is a server-side technique. You have to either use PHP, SSI, or another CGI technique -- you can't put an include directive in an html file.
you can do this by putting inner frame like this: <IFRAME marginWidth=0 marginHeight=0 src="../include.htm" frameBorder=0 width=706 scrolling=no height=220></IFRAME> Code (markup):
<!--#include virtual="path to file/include-file.html" --> Code (markup): That will include a file from a html file, Here is more about that, http://webdesign.about.com/od/ssi/a/aa052002a.htm
thank you all for your comments ITCN, nicangeli 1 MORE Q: GOOGLE SUPPORTS SSI/PHP/CIG FOR SEO STUFF??
Yes, SSI, php and cgi (when done properly) all are invisible to Google. Those are all server-side technologies that create and render the final page. Google spiders the final page, so it is unaware of what SSI you used to create it.