Marijo -

"I want to give my users an option to save not only a html but also and design (css + images) with 'save as' option in there browsers, but all that is saved are html and part of css is displayed with saved html. Is there any way to save images (used in background od div) also ?"

That is provided for in some browsers, like the Gecko based ones, as a menu selection. To be universally available, though, you'll probably want to put the appropriate files into a ZIP file for people to download.

"Does atribut media inside <style> tag has any influence with this ?"

No. This allows the designer to specify different styling for screen, print, etc.

"And is there any big difference between using 'src' atribut in <style> tag and @import ?"

For the most part no, though older browsers like NS4 do not recognize the @import and thus you can segregate styling from older browsers by loading newer styling with @import and use older styling with src.

That's my 2 cents. :^{>