Hi Anton,
no, it's more complicated or much worser.
There's one HTML file, inside this document are the about 25 tables. The tables and columns I can switch on/off witch the code "display:none" or "display:table-cell" or ....style.display = "";
This I need because of many different functions and other things.
What is possible of course, is to load the table first, when it's needed.. but in general I think, that during opening the app, the tables loading all and directly.
But also regarding your question: No, I don't have really buttons to switch to the next side. It's more connected with an Menu, which calls via javascript the rows, columns, tables.