Because google is blocked in china,so I can not use SIG plugin,Every time it displays:
Failed to load resource: net::ERR_CONNECTION_TIMED_OUT ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js
Uncaught ReferenceError: jQuery is not defined gzip.php?jquery.mousewheel-3.0.6.pack-039cea08.js:12
..
SO now I try to load jquery code from third party supplier,I find one,
change
<script src='ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js?ver=3.4.2'>
to
<script src='ajax.useso.com/ajax/libs/jquery/1.7.2/jquery.min.js?ver=3.4.2'>

the only thing I need is to change ajax.googleapis.com to ajax.useso.com
but I don't know where to modify the SIG code .
wish you can help me,
thank you very much

Hi. Look at the file plugins/content/jw_sig/jw_sig.php .

OK Lefteris,thank you very much

You are welcome.