Rename All Selected Library Items?

version flash cs5

ok so i know the general code to rename all selected library items

var items = fl.getDocumentDOM().library.getSelectedItems();
for (var i=0; i<items.length; i++){
var item = items[i];
item.name = "ABC_"+item.name;
}

but this isn't good enough if the library items are in folders... because item.name returns the full path, but item.name sets the name. o.O as someone else points out here, [URL]

so when i try to rename Level1 to be ABC_Level1 if Level1's folder path is LIBRARY/FolderA/FolderB/Level1 i get this instead ABC_FolderA-FolderB-Level1

i could probably code some sort of string parser something like this,

item.name = "ABC_"+item.name.substr(item.name.lastIndexOf("-"), 99)

but that is really ugly and would not work if library items contained "-" already. "Level-1" for example

different way to access the name that returns just the name and not the path