Same here. I updated to 1.2.2 and since then JavaScript popups don't show up anymore.
Tested with Firefox 1.5.0.6 and IE 6.0.2800.1106
Great app, btw. The whole studio is looking forward to see it working again.

EDIT: Actually, I think the link is just missing completely:
<td onmouseover="blankOver(this);" onmouseout="blankOut(this, 'cellColor0');" onclick="reserve('r','sc1443b600d83996','1156888800','','sc1443a45e045856',0,'','',900,960);"> </td>
EDIT2: btw, on the demo system, user "admin" does not seem to work with password "admin". Just to tell ya.