Merci pour ton intêret à mon problème,
mais il semble effectivement que "xoops_module_header" se trouve bien dans mon head donc le problème vient d'ailleurs !!
<head>
<meta http-equiv="content-type" content="text/html; charset=<{$xoops_charset}>" />
<meta http-equiv="content-language" content="<{$xoops_langcode}>" />
<meta name="robots" content="<{$xoops_meta_robots}>" />
<meta name="keywords" content="<{$xoops_meta_keywords}>" />
<meta name="description" content="<{$xoops_meta_description}>" />
<meta name="rating" content="<{$xoops_meta_rating}>" />
<meta name="author" content="<{$xoops_meta_author}>" />
<meta name="copyright" content="<{$xoops_meta_copyright}>" />
<meta name="Revisit-after" content="7 days" />
<meta name="Search Engines"
content="google.fr,google.com,lycos.fr,voila.fr,excite.fr,nomade.fr,yahoo.fr,estheweb.com,altaVista.fr,altavista.com,voila.com,ecila.fr,lycos.com,netcenter.com,msn.com,msn.fr,hachette.net,aol.fr,aol.com,francite.fr,orange.fr">
<META NAME="Identifier-URL" CONTENT="http://www.petitbain.com" />
<meta name="category" content="Photographe" />
<meta name="Updated" content="daily" />
<meta name="expires" content="0" />
<meta name="generator" content="XOOPS" />
<title><{$xoops_sitename}> - <{$xoops_pagetitle}></title>
<link href="<{$xoops_url}>/favicon.ico" rel="SHORTCUT ICON" />
<link rel="stylesheet" type="text/css" media="all" href="<{$xoops_url}>/xoops.css" />
<link rel="stylesheet" type="text/css" media="all" href="<{$xoops_themecss}>" />
<link rel="stylesheet" href="<{$xoops_url}>/jseffects/lightbox.css" type="text/css" media="screen" />
<!--[if lt IE 7.]>
<script defer type="text/javascript" src="pngfix.js"></script>
<![endif]-->
<!-- RMV: added module header -->
<{$xoops_module_header}>
<script type="text/javascript" src="<{$xoops_url}>/jseffects/prototype.js"></script>
<script type="text/javascript" src="<{$xoops_url}>/jseffects/scriptaculous.js?load=effects"></script>
<script type="text/javascript" src="<{$xoops_url}>/jseffects/lightbox.js"></script>
<script type="text/javascript">
<!--
<{$xoops_js}>
//-->
</script>
<script language="JavaScript" type="text/JavaScript">
<!--
function MM_swapImgRestore() { //v3.0
var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_preloadImages() { //v3.0
var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_findObj(n, d) { //v4.01
var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
if(!x && d.getElementById) x=d.getElementById(n); return x;
}
function MM_swapImage() { //v3.0
var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->
</script>
</head>