This code is outdated and just an upload of things I did in the past. So it does not have to work!!!
Untis HTML export doesn't work well if there are network issues and a page reloads due to outdated (?) technology using a meta refresh in frames instead of something like AJAX.
This is just a hotfix and not a solution to the initial problem.
- Make sure to get an outdated browser like Microsoft Internet Explorer
- Include JQuery in your initial page (the one you're showing e.g. on your monitor)
- Include vplan.js in this page after loading JQuery
- See that the this code tries to reload the frame content