A module that opens a link as a popup colorbox. There are some dependencies ... and you should be writing in the HTML code. So put your text format in full HTML and go to the source code.
I've created a block with the search and login links. If you add the class colorbox cboxElement you get a popup. The gallery brings together all the elements that have the same data colorbox-gallery.
For images do the same thing.... All images must have in their img tag, the rel = "naamofthe group". Then they will appear together in the slideshow.
An example of a block.
Yep the search in popup.
The strength of this module is that you can show full nodes in popup when you change the link as shown.