I have a classic ASP page that I need to display a DNN Event calendar in an IFRAME.  I was able to get the calendar on the classic asp page by inserting anchor tags in the header and footer of the event calendar DNN module settings. 

<a name="starthere> in the header

</a> in the footer setting

Then in the classic asp page using

<iframe id="Calendar" name="Calendar"
src="/dnn2/Events/tabid/56/Default.aspx#starthere"
marginheight=0
marginwidth=0
frameborder="0"
scrolling="no"
ALLOWTRANSPARENCY="TRUE"
style="border:0px;"
>

</iframe>

Now I am trying to pass up from the dnn calendar page the size of the module to set the size of the IFRAME in javascript.

I tried wrapping the dnn calendar module in a div tag named dnncalendar and using document.getElementById('dnncalendar').offsetHeight but this give me error document.getElementById("dnncalendar") has no properties  on the DNN page in Firefox and "object required" in IE.

I was able to get the entire page height by using document.height in Firefox but in IE it returns 'undefined'

Any help much appreciated in advance!