Fixed that changing tabs in project settings unselect "Write" tab of project description textarea (#27758).

git-svn-id: http://svn.redmine.org/redmine/trunk@17548 e93f8b46-1217-0410-a6f0-8f06a7374b81

public/javascripts/application.js

@@ -342,8 +342,8 @@ function toggleMultiSelect(el) {
 
 function showTab(name, url) {
   $('#tab-content-' + name).parent().find('.tab-content').hide();
-  $('#tab-content-' + name).parent().find('div.tabs a').removeClass('selected');
   $('#tab-content-' + name).show();
+  $('#tab-' + name).closest('.tabs').find('a').removeClass('selected');
   $('#tab-' + name).addClass('selected');
   //replaces current URL with the "href" attribute of the current link
   //(only triggered if supported by browser)