Building cascading keyword lists

Have anbody been succed to Build cascading keyword lists following the sample from Developers Workhttp://www-128.ibm.com/developerworks/lotus/library/ls-keyword_pt1/#N10055.

I have been having some challenges with the second keywordlist. I have found out that the Querystring does not contain the whole string that I transfer to the Form i load in the iframe

In the event ‘OnChange’ on my first keyword-field I execute following url to load the form i the iframe.

st = this[this.selectedIndex].text;

document.all(‘HidFrame [delete: lookupframe]’).src= ‘/Lookup.NSF/departmentlookup?ReadForm&Depart=’ + st;

I have debugged that the Variable st contain a value when the event Onchange is executed.

In my iframe the Querystring only contains ‘ReadForm’.

Everything after the character ‘&’ is missing.

What I am missing, is it not possible to catch querystring loading a form inside a iframe.