Add additional information to issues created by widget

Hello,

We would like to add additional meta information to the issues reported by the widget, like the customer identifier, the URL of the page the customer is currently on, etc. We could do this via the API, if we created our own form, but we like the UserEcho form created by the widget and would prefer to continue using it. Is there a way to hook into the widget code, perhaps, to get the issue created by the widget in JS and add our additional information? If we could have access to an un-minified version of the widget.js code we could figure it out ourselves :).

Thanks,

Lukman