Thread: probably I am missing something...HELP

hello I have a few question,I am new here,so I am still fighting with my site...I already did just a basic of index page,I have there three menu bars just for beggining,until I will learn how to work with them...
I need to know how to do this: If I will click on menubar called .lets say contacts....i need it would open just small window on the same page where will show up my contacts...it is probably easy,but I just dont know how to do it,where to start...my vebsite is www.hlasyzbasy.com dont be scared it is in czech language... Thank you so much guys for your patience with me Petra

On way to do it is

Highlight a link
Click Link icon
Select Open link with a pop up window
Click Popup settings
and set the dimensions and appearance.