Chris,
Thanks a bunch!
That certainly fixed the gap and the whitespace problem. There is still an issue on the drill down level - the first document aligns left, as it should, but from the second document on, all docs are pushed to the right of the Details button. Any ideas?
http://lcsa.info/index.php?option=com_docman&task=cat_view&gid=58&Itemid=90
Also, I have had a few occasions to ask the folks at Joomla Junkie (forums and support) for help, and wanted to let everyone know that the help has been quick and outstanding. Thank you all!
Tony