Here's one way I set up a link like what I think you're after. Look at this gallery and see if something like that would work. I put the link in the HTML in Step 5.
http://www.northwest-scenescapes.com/test/index.htm
The link will open in the same window to a text file I created in notepad. There is a return to gallery link in the file so that they can return to the gallery intro page. I put the return.html file in the same main folder on the server where the shozam gallery resides.
Here is the code I used for the link as put in the html in step 5
<center><a href="http://www.northwest-scenescapes.com/test/return.html">Workshops/Lectures</a></center>
To put in with the links you already have you can take out the '<center>" and </center> tags and place the code wherever you like in the other html you have.
Here is the text file I created with notepad and saved as return.html With the "return to gallery tag they will be returned to the gallery in the same browser window.
<body><center>Galapagos Island workshop March 8th through March 15th on the yacht Flamingo.<br><br><a
href="http://www.northwest-scenescapes.com/test/index.htm">Back to Gallery</a></body>
All you need to do is edit the URL tag ( a href) to the folder on your server where your shozam gallery is.
Hope that all makes sense
There are probably other ways to do this.