$(document).ready(function() {
    
    
    $("pre").each(
      function() {
        var code = $(this).html();
        code = escape(code);
        // %0A is a line feed, %0D is a carriage return
        if (code.indexOf("%0D%0A") > -1) {
          linecount = code.match(/%0D%0A/g).length;
        }
        else if (code.indexOf("%0A") > -1) {
          linecount = code.match(/%0A/g).length;
        }
        else if (code.indexOf("%0D") > -1) {
          linecount = code.match(/%0D/g).length;
        }
        code = unescape(code);
        var linenumbers = 1;
        for (i = 1; i < linecount; i++) {
          linenumbers += "<br />" + (i + 1);
        }
        $(this).before("<pre class=\"linenumbers\">" + linenumbers + "</pre>")
      }
    );



  });