Original patch from jbetak@netscape.com, r=ben@netscape.com, sr=hyatt@netscape.com, a=blizzard@mozilla.org preftree.xul - add id to appearance treechildren to allow dynamically overlayed panels git-svn-id: svn://10.0.0.236/trunk@97741 18797224-902f-48f8-a5cc-f745e15eee43