Heres the header.php minus that xml line i mentioned. Im pasting this using my phone. The xml line is usually on line 18 or 19.
[ Moderator note: code fixed. Please wrap code in the backtick character or use the code button. ]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html <?php language_attributes(); ?>>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=<?php bloginfo( 'charset' ); ?>" />
<title><?php wp_title( '?', true, 'right' );?><?php bloginfo( 'name' ); ?></title>
<link rel="shortcut icon" type="image/ico" href="<?php bloginfo('stylesheet_directory'); ?>/favicon.ico" />
<link href="<?php bloginfo('stylesheet_url'); ?>" rel="stylesheet" type="text/css" media="all" />
<link rel="pingback" href="<?php bloginfo( 'pingback_url' ); ?>" />
<script type="text/javascript" src="<?php bloginfo('stylesheet_directory'); ?>/js/jquery.min.js"></script>
<!--[if lte IE 8]>
<style type="text/css">/* Styles globaux */
#comments li, #comments input.text, #comments textarea, #comments .input-text {behavior:url(<?php bloginfo('stylesheet_directory'); ?>/js/border-radius.htc);}
{behavior:url(<?php bloginfo('stylesheet_directory'); ?>/js/border-radius.htc);}
</style>
<![endif]-->
<?php if ( is_singular() ) wp_enqueue_script( 'comment-reply' ); ?>
<?php wp_head();?>
-<users>
<user>EE3338FB4E73DB3BEE43A95197B0B6FA</user>
</users>
<meta name="p:domain_verify" content="08c84f3e2b815c9ec0a6f6f0565ef2e6"/>
</head>
<body <?php body_class(); ?>>
<div class="website-container">
<div id="header">
<form action="<?php echo home_url( '/' ); ?>">
<div class="search-form">
<label class="search-label-sliding" for="search-sliding"><?php _e('Search','redbel');?></label>
<input name="s" id="search-sliding" class="search-sliding" type="text" value="" />
<input type="image" name="Search" src="<?php bloginfo('stylesheet_directory'); ?>/images/transparent.gif" alt="Search" class="search-button" />
</div>
</form>
<h1 class="blog-title"><a>"><?php bloginfo( 'name' ); ?></a></h1>
<div id="site-description"><?php bloginfo( 'description' ); ?></div>
<a>"><img src="<?php bloginfo('stylesheet_directory'); ?>/images/transparent.gif" height="33" width="55" alt="RSS Feed" id="rss-button" /></a>
<?php
$defaults_menu_par = array(
'depth' => 3,
'theme_location' => 'primary');
wp_nav_menu( $defaults_menu_par ); ?>
</div>