The problem is with this layer. It moves to right about 30-40px in Firefox browser.
<div id="Layer53"><font color="#FFFFFF"><a href="ladies_gallery.php" class="navigation">photo
album</a></font><font color="#FFFFFF"><a href="about_page.htm" class="navigation"> about us</a></font><font color="#FFFFFF"><a href="about_page.htm#contact" class="navigation"> contact
us</a></font><font color="#FFFFFF"><a href="happy_stories.htm" class="navigation"> happy stories</a></font><font color="#FFFFFF"><a href="#antiscam_page.html" class="navigation" onClick="MM_openBrWindow('antiscam_page.html','antiscam','scrollbars=yes,width=845,height=500')"> antiscam</a></font><font color="#FFFFFF"><a href="FAQ_page.htm" class="navigation" > FAQ</a></font><font color="#FFFFFF"><a href="
http://roksolana-dating.com/livechat/index.php" class="navigation" > LiveChat</a></font></div>
and this layer moves 30px down after it comes with timeline
<div id="Layer2" style="position:absolute; left:-183px; top:112px; width:484px; height:49px; z-index:1">
<h1><font color="#990000" face="Times New Roman, Times, serif" size="+7"><b><font size="+5" class="headhome">Welcome
to our Dating Agency!</font></b></font></h1>
</div>
What can you say about it?