aElt.localName == "toolbarspacer"; 
aElt.localName == "toolbarspacer" || aElt.localName == "splitter"; 
function isToolbarItem(aElt){  return aElt.localName == "toolbarbutton" ||         aElt.localName == "toolbaritem" ||         aElt.localName == "toolbarseparator" ||         aElt.localName == "toolbarspring" ||         aElt.localName == "toolbarspacer";}
5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5459/7f76983b0e5248951a2a9c55a7240aa0c520c3d4/customizeToolbar.js/clean/toolkit/content/customizeToolbar.js