Update zsc.js

try to pop-up web page when encountering reCAPTCHA from "Unusual traffic warning".

chrome/content/zsc.js

@@ -200,11 +200,26 @@ zsc.retrieveCitationData = function(item, cb) {
  }
  }
  } else if (this.readyState == 4 && this.status == 429) {
- if (isDebug()) Zotero.debug('[scholar-citations] '
- + 'could not retrieve the google scholar data. Server returned: ['
- + xhr.status + ': ' + xhr.statusText + ']. '
- + 'GS want\'s you to wait for ' + this.getResponseHeader("Retry-After")
- + ' seconds before sending further requests.');
+ if (this.responseText.indexOf('www.google.com/recaptcha/api.js') == -1) {
+ if (isDebug()) Zotero.debug('[scholar-citations] '
+ + 'could not retrieve the google scholar data. Server returned: ['
+ + xhr.status + ': ' + xhr.statusText + ']. '
+ + 'GS want\'s you to wait for ' + this.getResponseHeader("Retry-After")
+ + ' seconds before sending further requests.');
+ } else {
+ if (isDebug()) Zotero.debug("[scholar-citations] "
+ + "received a captcha instead of a scholar result");
+ alert(zsc._captchaString);
+ if (typeof Zotero.openInViewer !== 'undefined') {
+ Zotero.openInViewer(url);
+ } else if (typeof ZoteroStandalone !== 'undefined') {
+ ZoteroStandalone.openInViewer(url);
+ } else if (typeof Zotero.launchURL !== 'undefined') {
+ Zotero.launchURL(url);
+ } else {
+ window.gBrowser.loadOneTab(url, {inBackground: false});
+ }
+ }
 
  } else if (this.readyState == 4) {
  if (isDebug()) Zotero.debug('[scholar-citations] '