I'd like some of the Tools to open in new windows (I have firefox to open new windows as new tabs)

How would I add target=_blank to the following link:

Code:
$za_contents[] = array('text' => BOX_TOOLS_DEVELOPERS_TOOL_KIT, 'link' => zen_href_link(FILENAME_DEVELOPERS_TOOL_KIT, '', 'NONSSL'));
Many thanks