rem: var tree = document.getElementById('active_charsets'); 
add: var tree = document.getElementById('active_charsets'); 
context: function MoveUp() {  var tree = document.getElementById('active_charsets');   if (tree.selectedItems.length == 1) {    var selected = tree.selectedItems[0];    var before = selected.previousSibling    if (before) {      before.parentNode.insertBefore(selected, before);      tree.selectItem(selected);      tree.ensureElementIsVisible(selected);    }  }  enable_save();} //MoveUp
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/476f40a9ffe840661db8a7547c416a58355c9cd7/pref-charset.js/clean/suite/common/pref/pref-charset.js