fhemweb.js: scroll to device help (Forum #33916)

git-svn-id: https://svn.fhem.de/fhem/trunk@8067 2b470e98-0d58-463d-a4d8-8e2adae1ed80

fhem/www/pgm2/fhemweb.js

@@ -152,6 +152,8 @@ FW_jqueryReadyFn()
       $("#content").append('<div id="devSpecHelp"></div>');
       FW_cmd(FW_root+"?cmd=help "+dev+"&XHR=1", function(data) {
         $("#devSpecHelp").html(data);
+        var off = $("#devSpecHelp").position().top-20;
+        $('body, html').animate({scrollTop:off}, 500);
       });
     });
   });