def use_xpath_library(self,libraryName):
self.do_command("<STR_LIT>", [libraryName,])<EOL>
Allows choice of one of the available libraries.

'libraryName' is name of the desired library Only the following three can be chosen:
*   "ajaxslt" - Google's library
*   "javascript-xpath" - Cybozu Labs' faster library
*   "default" - The default library.  Currently the default library is "ajaxslt" .

 If libraryName isn't one of these three, then  no change will be made.