Hallo Shadowcrow,
der Code sieht jetzt so aus:
  
if(isset($_POST['submit']) && $_POST['submit']=="abschicken"){  
  
	if($userfile == "") {  
	 ...  
	}  
	else {  
		$userfile_name = str_replace("ä","ae",$userfile_name);  
		$userfile_name = str_replace("ö","oe",$userfile_name);  
		$userfile_name = str_replace("ü","ue",$userfile_name);	  
  
		if (file_exists("$dir/$subdir/".$userfile_name)) {  
			echo ("<head><META HTTP-EQUIV='refresh' content='2;URL={$_SERVER['PHP_SELF']}'>  
			 <link href='../../Seiten/style.css' rel='stylesheet' type='text/css'></head>  
			 <table class='info'>  
			 <tr>  
				<td class='info'>Der Artikel existiert schon !</td>  
			 </tr>  
			 </table>");exit;  
		}  
		else {  
		    move_uploaded_file($userfile, "./shop/pics/".$userfile_name);  
		}  
	}  
  
	  
	if($artikelName == ""){ usw.
hat aber nichts gebracht
Gruss
hannes