display content relevant to link on same page

display content relevant to link on same page

Ok, i am new to jQuery, beginner.

Briefly, on page there is scientific article with cross references. And when you click on reference (example 1 ) on number 1, then the box opens and display some text relevant to that link. And that text is also on same page but in part where is literature. So, user instead to scroll all way down, he can just click on reference and see in box what it is about.
I can post link to this site to see what i mean but i don't know if its in line with forum rules?

I did google search and that is connected with modal dialog. But it's too complicated for me to figure out.

And here i am asking for help