Hi Fabrice, thanks for your reply. I'm afraid I can't get it working though.
With AddInto I created a button code like this:
<a href="http://www.addinto.com/ai/?type=bkmk" onmouseover="ai2display_bkmk(this, '', '', '');" onmouseout="ai2close_bkmk();"><img src="http://www.addinto.com/logos/logo-a.gif" alt="AddInto" border="0" /></a><script type="text/javascript">var ai2_bkmks = "Email client,Facebook,Twitter";</script><script type="text/javascript" src="http://static.addinto.com/ai/ai2_bkmk.js"></script>
In order to share individual locations, I thought that I shoud insert this code into the bubble definition so I put it inside the bubble0.php file (which I already customized for other reasons). Unfortunately, inserting this code seems to cause a problem as the map stops showing all submitted locations and the map center is somewhere in the ocean.
So I suppose that I do not understand correctly where I should put the code. Yet I would say that, in order to share an individual location, the bubble would be the place to create a button?
I hope you can help me out.
Frits