Salve, ho inserito questo menu : 

http://tympanus.net/Tutorials/SlideDownBoxMenu/

mi crea un problema quando vado ad inserire l html nell intestazione: mi sposta il content sulla sinistra, credo dunque che il problema sia in questo html.

allego codice:

<div class="content">
<ul id="sdt_menu" class="sdt_menu">
<li>
<a href="http://www.villaggiolepalatine.it/villette.html">
<img src="images/1.jpg" alt=""/>
<span class="sdt_active"></span>
<span class="sdt_wrap">
<span class="sdt_link">Villette</span>
<span class="sdt_descr"></span>
</span>
</a>
</li>
<li>
<a href="http://www.villaggiolepalatine.it/spiaggia-1.html">
<img src="images/2.jpg" alt=""/>
<span class="sdt_active"></span>
<span class="sdt_wrap">
<span class="sdt_link">Spiaggia</span>
<span class="sdt_descr"></span>
</span>
</a>
</li>
<li>
<a href="">
<img src="images/3.jpg" alt=""/>
<span class="sdt_active"></span>
<span class="sdt_wrap">
<span class="sdt_link">Attività</span>
<span class="sdt_descr"></span>
</span>
</a>
<div class="sdt_box">
<a href="http://www.villaggiolepalatine.it/sport-e-tempo-libero.html">Sport e Tempo Libero</a>
<a href="http://www.villaggiolepalatine.it/animazione.html">Animazione</a>
<a href="http://www.villaggiolepalatine.it/tour-e-visite-guidate.html">Tour e Visite Guidate</a>
</div>
</li>
<li>
<a href="#">
<img src="images/4.jpg" alt=""/>
<span class="sdt_active"></span>
<span class="sdt_wrap">
<span class="sdt_link">Servizi</span>
<span class="sdt_descr"></span>
</span>
</a>
<div class="sdt_box">
<a href="http://www.villaggiolepalatine.it/bar.html">Bar</a>
<a href="http://www.villaggiolepalatine.it/ristorante---pizzeria.html">Ristorante - Pizzeria</a>
<a href="http://www.villaggiolepalatine.it/market.html">Market</a>
<a href="http://www.villaggiolepalatine.it">Edicola Bazar</a>
<a href="http://www.villaggiolepalatine.it/parrucchiere.html">Parrucchiere</a>
<a href="http://www.villaggiolepalatine.it/navetta.html">Navetta</a>
</div>
</li>
<li>
<a href="http://www.villaggiolepalatine.it/tariffe.html">
<img src="images/5.jpg" alt=""/>
<span class="sdt_active"></span>
<span class="sdt_wrap">
<span class="sdt_link">Tariffe</span>
<span class="sdt_descr"></span>
</span>
</a>
</li>
<li>
<a href="http://www.villaggiolepalatine.it/contatti.html">
<img src="images/6.jpg" alt=""/>
<span class="sdt_active"></span>
<span class="sdt_wrap">
<span class="sdt_link">Contatti</span>
<span class="sdt_descr"></span>
</span>
</a>
</li>
</ul>
</div>

<!-- The JavaScript -->
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript" src="jquery.easing.1.3.js"></script>
<script type="text/javascript">
$(function() {
/**
* for each menu element, on mouseenter,
* we enlarge the image, and show both sdt_active span and
* sdt_wrap span. If the element has a sub menu (sdt_box),
* then we slide it - if the element is the last one in the menu
* we slide it to the left, otherwise to the right
*/
$('#sdt_menu > li').bind('mouseenter',function(){
var $elem = $(this);
$elem.find('img')
.stop(true)
.animate({
'width':'170px',
'height':'170px',
'left':'0px'
},400,'easeOutBack')
.andSelf()
.find('.sdt_wrap')
.stop(true)
.animate({'top':'140px'},500,'easeOutBack')
.andSelf()
.find('.sdt_active')
.stop(true)
.animate({'height':'190px'},300,function(){
var $sub_menu = $elem.find('.sdt_box');
if($sub_menu.length){
var left = '170px';
if($elem.parent().children().length == $elem.index()+1)
left = '-170px';
$sub_menu.show().animate({'left':left},200);
}
});
}).bind('mouseleave',function(){
var $elem = $(this);
var $sub_menu = $elem.find('.sdt_box');
if($sub_menu.length)
$sub_menu.hide().css('left','0px');

$elem.find('.sdt_active')
.stop(true)
.animate({'height':'0px'},300)
.andSelf().find('img')
.stop(true)
.animate({
'width':'0px',
'height':'0px',
'left':'85px'},400)
.andSelf()
.find('.sdt_wrap')
.stop(true)
.animate({'top':'25px'},500);
});
});
</script></div>