[CSS 3] Integration menu css3 mega dropdown menu

bonjour, j'ai récupérer un script pour afficher un menu déroulant en CSS3 et jQuery : css3 mega dropdown menu (déniché ici : http://astuces-webmaster.ch/tutos/jq...ss3-jquery.php), seulement même si le script marche bien, lorsque je désire insérer du texte comme contenu dans la page, celui-ci apparait à travers le menu déroulant ...
Après plusieurs recherches infructueuses de part mes lacunes en css, je vous supplie de me donner une piste !:cry:

La page en question :
http://www.livingtoulouse.fr/site_el...s3-jquery.html

La page html :

Code:

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
 
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>CSS3 Mega Dropdown Menu | By Snoupix, Soh Tanaka & Hein Maas</title>
 
<link href="css/menu.css" rel="stylesheet" type="text/css" />
 
</head>
 
<body id="home">
<div class="container">
    <div id="header"></div>
	<div id="nav_wrapper">
		<span id="menu_start"><a href="#" class="home">Home</a></span>
	    <ul id="topnav">
	    	<li>
		    	<a href="#">
		    		<span class="single_wrapper">Accueil</span>
				</a>
	        </li>
	        <li class="liSub">
	        	<a href="#">
	        		<span class="dd_wrapper">
	        			Prestations
						<span class="dd_action"><img src="images/arrow.png" alt="" /></span>
					</span>
				</a>
              <div style="opacity: 0; display: none; width: 450px;" class="sub">
	            	<div class="row">
	                    <ul style="width: 225px;">
	                        <li><h2><a href="#">Soins-relaxants</a></h2></li>
	                        <li><a href="#">Modelage Californien / Suédois</a></li>
	                        <li><a href="#">Modelage Sérénité</a></li>
	                        <li><a href="#">Le AMMA assis</a></li>
	                        <li><h2><a href="#">Séances thérapeutiques</a></h2></li>
	                        <li><a href="#">Approche Emotivo-Rationnelle</a></li>
	                        <li><a href="#">Thèmes abordés</a></li>
 
	                    </ul>
	                    <ul style="width: 225px;">
	                        <li><h2><a href="#">&nbsp;</a></h2></li>
	                        <li><a href="#">Réflexologie Plantaire</a></li>
	                        <li><a href="#">Réflexologie palmaire</a></li>
	                        <li><a href="#">Soin Amincissement traditionnel</a></li>
	                        <li><h2><a href="#">Coaching</a></h2></li>
	                        <li><a href="#">Entretien individuel personnalisé</a></li>
	                        <li><a href="#">Réunion accompagnement-écoute</a></li>
	                    </ul>
	                </div>
 
	            </div>
	        </li>    	
	        <li class="liSub">
	        	<a href="#">
	        		<span class="dd_wrapper">
	        			Entreprises
						<span class="dd_action"><img src="images/arrow.png" alt="" /></span>
					</span>
				</a>
              <div style="opacity: 0; display: none; width: 450px;" class="sub">
	            	<div class="row">
	                    <ul style="width: 225px;">
	                        <li><a href="#">Le stress au travail</a></li>
	                        <li><h2><a href="#">Salons, congrès, expositions</a></h2></li>
	                        <li><a href="#">Le AMMA assis</a></li>
	                        <li><h2><a href="#">Tarifs</a></h2></li>
	                        <li><a href="#">Obtenir un devis</a></li>
 
	                    </ul>
	                    <ul style="width: 225px;">
 
	                        <li><a href="#">Enjeux économiques pour l'entreprise</a></li>
	                        <li><h2><a href="#">Prestations intra-entreprise / CE</a></h2></li>
		                        <li><a href="#">Le AMMA assis</a></li>
	                        <li><a href="#">Entretien individuel personnalisé</a></li>
	                        <li><a href="#">Réunion accompagnement-écoute</a></li>
 
	                    </ul>
	                </div>
 
	            </div>
	        </li> 
			<li>
				<a href="#">        	
					<span class="single_wrapper">Tarifs</span>
				</a>
	        </li>
 <li class="liSub">
	        	<a href="#">
	        		<span class="dd_wrapper">
	        			Promotions
						<span class="dd_action"><img src="images/arrow.png" alt=""/></span>
					</span>
				</a>
              <div style="opacity: 0; display: none; width: 300px;" class="sub">
	            	<ul>                	
	                	<li><a href="#">Chèque Cadeau</a></li>                       
	                </ul>
	                <ul>                	
	                	<li><a href="#">Bons de réductions</a></li>                     
	                </ul>                                
	            </div>
	        </li>
			<li>
				<a href="#">        	
					<span class="single_wrapper">Infos</span>
				</a>
	        </li>
	        <li id="last-li">        	
				<a href="#">        	
					<span class="single_wrapper">Contact</span>
				</a>
	        </li>
	    </ul>
		<span id="menu_end"><img src="images/last_li.png" width="5" height="46" alt="" /></span>
	</div>
 
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</div>
 
 
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript" src="js/jquery.hoverIntent.minified.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript" src="js/jquery.hoverIntent.minified.js"></script>
<script type="text/javascript">
         /*
         * jQuery Mega Drop Down Menu script by Soh Tanaka
         * http://www.sohtanaka.com/web-design/mega-drop-downs-w-css-jquery/
         * 
         */
         $(document).ready(function(){
 
         function megaHoverOver(){
         $(this).find(".sub").stop().fadeTo('fast', 1).show();
 
         //Calculate width of all ul's
         (function($) {
         jQuery.fn.calcSubWidth = function() {
         rowWidth = 0;
         //Calculate row
         $(this).find("ul").each(function() { 
         rowWidth += $(this).width(); 
         }); 
         };
         })(jQuery); 
 
         if ( $(this).find(".row").length > 0 ) { //If row exists...
         var biggestRow = 0; 
         //Calculate each row
         $(this).find(".row").each(function() { 
         $(this).calcSubWidth();
         //Find biggest row
         if(rowWidth > biggestRow) {
         biggestRow = rowWidth;
         }
         });
         //Set width
         $(this).find(".sub").css({'width' :biggestRow});
         $(this).find(".row:last").css({'margin':'0'});
 
         } else { //If row does not exist...
 
         $(this).calcSubWidth();
         //Set Width
         $(this).find(".sub").css({'width' : rowWidth});
 
         }
         }
 
         function megaHoverOut(){
         $(this).find(".sub").stop().fadeTo('fast', 0, function() {
         $(this).hide();
         });
         }
       var config = {
         sensitivity: 2,		// number = sensitivity threshold (must be 1 or higher) 
         interval: 0, 			// number = milliseconds for onMouseOver polling interval 
         over: megaHoverOver,   // function = onMouseOver callback (REQUIRED) 
         timeout: 0, 			// number = milliseconds delay before onMouseOut 
         out: megaHoverOut 		// function = onMouseOut callback (REQUIRED) 
         }; $("ul#topnav li .sub").css({'opacity':'0'});
         $("ul#topnav li").hoverIntent(config);
 
         // Add class to the current element
         $("ul#topnav li").click(function(){
         $("ul#topnav").find("li.current").removeClass().removeAttr("class");
         $(this).addClass("current");
         });
 
         // Change arrow on hover
         $("li.liSub").hover(function(){
         $(this).find("span img").attr("src", "arrow_hover.png");
         },function(){
         $(this).find("span img").attr("src", "arrow.png");
         });
 
         // Delete the border for the last li of the submenu
         $("ul#topnav .sub ul li:last-child a").css("border", "none");
      });
         </script>
 
 
 
</body>
</html>

Le css :

Code:

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body {
	background:url("../images/body_bg.png") repeat-x scroll 0 0 transparent;
	margin: 0; padding: 0;
	font: normal 10px Tahoma, Verdana, Arial, Helvetica, sans-serif;	
}
*{outline: none;}
img {border: 0;}
 
.container {
   margin: auto;
   width: 821px;
}
#header {
	background:url("../images/header.png") no-repeat scroll 0 0 transparent;
	width: 568px; height: 163px;
	float: left;
}
#nav_wrapper {
	clear: left;
}
 
span#menu_end {
	display:block;
	float:left;
	height:46px;
	width:5px;
}
 
span#menu_start {
	display:block;
	float:left;
	height:46px;
	width:52px;
}
ul#topnav {
	margin: 0; padding: 0;
	float:left;
	list-style: none;
	font-size: 1em;
	background: url("../images/back_nav.png") repeat-x;
}
ul#topnav li {
	float: left;
	margin: 0; padding: 0;
	position: relative;
	background: url(../images/li_border.png) no-repeat right top;	
}
ul#topnav li#last-li {
	background: none;
}
ul#topnav li#last-li a span.single_wrapper {
	float:left;
	margin:6px 6px 6px 10px;
	padding:0 10px;
}
 
ul#topnav li.liSub a, ul#topnav li a {
	color: white;
	float: left;
	height: 46px;
	line-height: 34px;
	padding: 0;
	text-decoration: none;
	text-shadow: 0 0 2px black;
	text-transform: uppercase;
	z-index: 200;
}
 
span#menu_start a {
	background: url(../images/home_nav.png) no-repeat left top;
	width: 52px; height: 46px;
	text-indent: -9999px;
	padding:0; margin:0;
}
span#menu_start a:hover  { background-position: left -46px; }
span#menu_start a:active { background-position: left -92px; }
 
span#menu_start a {	display:block; line-height: 46px; }
 
ul#topnav li .sub {
	position: absolute;	
	top: 46px; left: 10px;
	background: #FFFFFF;
	background-color: #f8f8f8\9; /* le  \9  est un hack pour cibler IE8, IE7 et IE6 */ 
	border-bottom: 1px solid #cbcbcb\9;
	border-left: 1px solid #cbcbcb\9;
	border-right: 1px solid #cbcbcb\9;
	padding: 10px 10px 10px;
	float: left;
 
	border-bottom-right-radius:		    10px;
	-moz-border-radius-bottomright:     10px;
	-khtml-border-radius-bottomright:   10px;
	-webkit-border-bottom-right-radius: 10px;
 
	border-bottom-left-radius:		    10px;
	-moz-border-radius-bottomleft:      10px;
	-khtml-border-radius-bottomleft: 	10px;
	-webkit-border-bottom-left-radius:  10px;
 
	box-shadow:0px 0px 5px #5a5a5a;
	-moz-box-shadow:0px 0px 5px #5a5a5a;
	-webkit-box-shadow:0px 0px 5px #5a5a5a;
	display: none;
	z-index: -10;
}
ul#topnav li .row {clear: both; float: left; width: 100%; margin-bottom: 10px;}
ul#topnav li .sub ul{
	list-style: none;
	margin: 0; padding: 0;
	width: 150px;
	float: left;
}
ul#topnav .sub ul li {
	width: 100%;
	color: #fff;
	background: none;
}
ul#topnav .sub ul li h2 {
	padding: 0;  margin: 0;
	font-size: 1.3em;
	font-weight: normal;
}
ul#topnav .sub ul li h2 a, ul#topnav .sub ul li h2 a:hover {
	padding: 5px 0;
	background-image: none;
	color: #c10707;
}
ul#topnav .sub ul li h2 a:hover {
	background-image: none;
	text-decoration: underline;
}
ul#topnav .sub ul li a {
	float: none; 
	text-indent: 0;
	height: auto;
	background: url(../images/navlist_arrow.png) no-repeat 0px 10px;
	padding: 0 0 0 18px;
	margin: 0 10px;
	display: block;
	text-decoration: none;
	color: #757575;
	font-size:1.1em;
	text-shadow: none;
	border-bottom: 1px solid #e6e6d8;
	text-transform: none;
	line-height:27px;
}
ul#topnav .sub ul li a:hover {
	color: #c50a0a;
	background: url(../images/navlist_arrow_hover.png) no-repeat 0px 10px;
	text-decoration: underline;
}
 
span.dd_action {
	height:6px;
	padding:0 0 0 10px;
	width:9px;
}
 
span.single_wrapper {
	float:left;
	margin:6px 10px;
	padding:0 15px;
}
 
span.single_wrapper:hover, li.current a span.single_wrapper {
	background: white;
	color: black;
 
	/* -- CSS3 stuff -- */
 
	text-shadow: none;
 
	filter: progid:DXImageTransform.Microsoft.gradient(gradientType=0, startColorstr=#FFFFFFFF, endColorstr=#FFe5e5e5);
	background-image: -moz-linear-gradient(	top, #FFFFFF, #e5e5e5);
	background-image: -webkit-gradient( linear,	left top, left bottom, from(#FFFFFF), to(#e5e5e5));
 
	border-radius: 	       7px; /* Propriété CSS3 générale et pour Opera */
	-moz-border-radius:    7px; /* Propriété CSS3 pour Firefox */
	-khtml-border-radius:  7px; /* Propriété CSS3 pour navigateurs KHTML */
	-webkit-border-radius: 7px; /* Propriété CSS3 pour navigateurs Webkit */
 
	box-shadow:         0px 0px 2px #343333; /* Propriété CSS3 */
	-webkit-box-shadow: 0px 0px 2px #343333; /* Propriété CSS3 pour Firefox */
	-moz-box-shadow:    0px 0px 2px #343333; /* Propriété CSS3 pour navigateurs Webkit */
}
 
span.single_wrapper:active {
	background: white;	
	color: black;
 
	/* -- CSS3 stuff -- */
 
	text-shadow: none;
 
	filter: progid:DXImageTransform.Microsoft.gradient(gradientType=0, startColorstr=#FFe5e5e5, endColorstr=#FFFFFFFF);
	background-image: -moz-linear-gradient(	top, #e5e5e5, #FFFFFF);
	background-image: -webkit-gradient( linear, left top, left bottom, from(#e5e5e5), to(#FFFFFF));
 
	border-radius:         7px;
	-moz-border-radius:    7px;
	-khtml-border-radius:  7px;
	-webkit-border-radius: 7px;
 
	box-shadow:         0px 0px 2px #343333;
	-webkit-box-shadow: 0px 0px 2px #343333;
	-moz-box-shadow:    0px 0px 2px #343333;
}
 
span.dd_wrapper {
	float:left;
	margin:6px 10px 0;
	padding:0 11px 6px 18px;
}
 
li.liSub a:hover span.dd_wrapper, li.liSub:hover a span.dd_wrapper {
	z-index:      100;
	background:   white;
	color: 		  black;
	border-top:   1px solid #e5e5e5;	
	border-right: 1px solid #989898;
	padding:	  0 10px 6px 18px;	
 
	/* -- CSS3 stuff -- */
 
	text-shadow: none;
 
	filter: progid:DXImageTransform.Microsoft.gradient(gradientType=0, startColorstr=#dfdfdf, endColorstr=#f8f8f8); /* Pour IE */
	background-image: -moz-linear-gradient(	top, #e5e5e5, #FFFFFF); /* Pour Firefox */
	background-image: -webkit-gradient( linear,	left top, left bottom, from(#e5e5e5), to(#FFFFFF)); /* Pour Webkit */
 
	border-top-right-radius:		 7px;
	-moz-border-radius-topleft: 	 7px;
	-webkit-border-top-left-radius:  7px;
	-khtml-border-radius-topleft: 	 7px;
 
	border-top-left-radius:		     7px;
	-moz-border-radius-topright: 	 7px;
	-webkit-border-top-right-radius: 7px;
	-khtml-border-radius-topright: 	 7px;
}