Lets start with a (german) sample webpage which shows some data information:

https://www.wikifolio.com/de/de/wikifolio/futecus

Now when user click on a "+" sign right of one of the grey bars in the mid (e.g. right of "Aktuelles Portfolio")
then the content inside this section is expanded.

Unfortunately I cannot tell the webpage to always automatically expand this section when it is loaded.

So I need some javascript/CSS/jQuery statements in a Gresemonkey script to emulation/simulate such a mouse click.

Have a look at the following snapshot of Firebug inside Firefox:

View image: firebug wikifolio

You can see yellow hightlighted parameters which change when users click on the "+" and toogle expansion status.

How can I emulate/simulate these changes (=a mouse click) with Javascript/CSS?

Peter