Javascript errors in Print Preview

When you select print preview for a composite asset, you get one Java script error for each content block (Element).

For example, this page gets 11 errors all the same- http://dev.curriki.org/xwiki/xwiki/view/Coll_jmarks/WYSIWYGEditorTests?viewer=print&withbuttons=1

in xwiki.js (lin 114)
o has no properties
eltHasClass(null, "titlebar_left")xwiki.js (line 114)
addClass(null, "titlebar_left")xwiki.js (line 109)
[Break on this error] if(!o.className)

Also in IE, the widths of the elements are not consistent.

Finally, the print link in the view page needs to be changed to open in a new window and include the "&withbuttons=1"