Implementing Open Map on my website: Markers as direct links?

Im a visual artist involved in drawing work.

To mark/locate my drawings from the City of Zurich on a map i originally created this site:
This is too static and I have to add a lot of new drawings.
So I started to mark them on a dynamic map, I use Open Map:

The problem is the following:
I want the "GRR"markers to act as direct links to the drawings and no popup should appear.
How can I do this?

The html-documents (mappy.html) implements a javascript (OpenLayers.js),
the coordinates of the markers are in the textfile (textfile.txt).
The 3 documents are online in the folder:

…with GRRRReetings, Ingo