If I´ve got header can I make some links in header like here :
http://z10.invisionfree.com/A_THOUSAND_FIREFLIES/index.php?s=0c72f4050baf6cba4dcd11333937729d&act=idx

I'm not sure if its possible or not. However since what you've linked above isn't a forumotion forum then it might not be. I'll wait for someone else to give a more definitive answer but since that is another forum host it might not be.

Oh yes its invision free but I´ve got forummotion so I was thinking if maybe is something like that also possible

It would indeed be possible using jQuery but it's somewhat difficult to simulate the exact code used there...

Code:

jQuery(document).ready(function(){
jQuery('img#i_logo').hover( // define onmouseenter
function(){
/* add code to display content with CSS transitions (I allowed myself to check
 * their source code, they are using transitions)
 */
}
,
function(){ // define onmouseleave
// Here, add code to make content invisible again
});
});


I am not really experienced with jQuery, maybe LGforum or someone more experienced with jQuery can help you.

Ok thank you so this is solved