Workaround a (possible) IE bug (#1485309).

svncommit

2008-09-17 8b7f5a3792d1514b7c0310c0f1dc5139958c1502

 program/js/app.js

@@ -1240,6 +1240,18 @@
        if (this.env.mailbox.indexOf(id + this.env.delimiter) == 0)
          this.command('list', id);
        }

      // Work around a bug in IE6 and IE7, see #1485309
      if ((bw.ie6 || bw.ie7) &&
          li.nextSibling &&
          (li.nextSibling.getElementsByTagName("ul").length>0) &&
          li.nextSibling.getElementsByTagName("ul")[0].style &&
          (li.nextSibling.getElementsByTagName("ul")[0].style.display!='none'))
        {
          li.nextSibling.getElementsByTagName("ul")[0].style.display = 'none';
          li.nextSibling.getElementsByTagName("ul")[0].style.display = '';
        }

      this.http_post('save-pref', '_name=collapsed_folders&_value='+escape(this.env.collapsed_folders));
      this.set_unread_count_display(id, false);
      }