Hrmm, going back to the old--url param--way of passing data around windows/iframes...

Hrmm, going back to the old--url param--way of passing data around windows/iframes here.  Fixes a regression where Item Details weren't showing for Bill History/Alternate View/Full Details in billing interface.  Remind me to never use iframes in the next major staff client overhaul; I'll use Bill & Mike's clone template node strategy first. :)  Let's also trap the error I'm working around here, TypeError: this.docShell has no properties when trying to access the contentWindow for these specific iframes

git-svn-id: svn://svn.open-ils.org/ILS/branches/rel_1_2@8169 dcc99617-32d9-48b4-a31d-7c20da2025e4