rem: gOK.disabled = selection.length != 1 || 
add: gOK.disabled = !selection.length != 1 || 
context: function updateOK(){  var selection = gBookmarkTree._selection;  gOK.disabled = selection.length != 1 ||                 (selection.type[0] != "Bookmark" && selection.type[0] != "")}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/b703a680af1d3650d75e6299dc72687209924f3d/selectBookmark.js/clean/browser/components/bookmarks/content/selectBookmark.js