Ok, this is stupid but I don't know what is happend. On index page I have two different flash but in Firefox it show the same on both. This is totaly different slideshows and in other browser everything is ok. I am copy/paste object tag and just change file. F5, refresh etc. are not working. Problem in FF you can see here:
http://aktiktak.hr/

Its in here:

<div id="slide2">
object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0" width="220" height="220">
<param name="allowScriptAccess" value="sameDomain" />
<param name="movie" value="slideshow.swf" />
<param name="quality" value="high" />
<param name="bgcolor" value="#ffffff" />

<param name="wmode" value="transparent" />
<!--[if !IE]> <-->
<object data="slide2.swf" width="150" height="170" type="application/x-shockwave-flash" >
<param name="quality" value="high" />
<param name="bgcolor" value="#ffffff" />
<param name="pluginurl" value="http://www.macromedia.com/go/getflashplayer" />
<param name="wmode" value="transparent" />

Thank you Lady, the problem is in below (!IE) statment but your post open my eyes to see where is mistake. It is interesting how all other browsers (Safari, Chrome, Opera) read first statment and only FF reading second one. Logicaly only IE must read first one.

had the same prob
thx lady