#1

The issue of multiple intent popups created for website widgets/webintents. (https://dev.twitter.com/issues/191) is marked as fixed. But it’s still the same. Can be seen here: Edit fiddle - JSFiddle - Code Playground

#2

I only tried your code on Chrome, but the onclick in the HTML is executed before the code from widgets.js, so there is not much we can do.
Adding if (event.stopPropagation) {event.stopPropagation();} in the onclick before the return false; works though.

#3