Trying to pass an object from a showmodaldialog from the child to the
parent:

I get an alert that says undefined:

       var o = new Object();
     
       o.FirstName = document.getElementById("first_name").innerHTML;
       window.returnValue = o.FirstName;
       window.close();

on the parent:

retval=window.showModalDialog ('searchMNI.aspx?lastname=' + temp);
alert("it is: " + retval.FirstName);

These are from a slightly larger context, but you get the picture from
these snippets.

What am I doing wrong?   Thanks.