Select return value

I'm still trying to figure out how to get the value from a select IDA call. Here is the function this is executed when they click a button at the top:

//*********************************************************************************
// If the user clicked the lookup employee  button
//*********************************************************************************

function btn_LookEmp()
{
 idaCall = "/servlet/ida?_STY=&_TYP=SL&_OUT=XML&_PDL=LAWAPP8&_SYS=HR&_KNB=H07&_FN=EMPLOYEE&_IN=EMPSET6&HU4=0&H20=GE&HCU=&01=2082&_RECSTOGET=27"

  top.lawsonPortal.tabArea.tabs["PAGE"].clearNavlets();
   top.lawsonPortal.drill.doSelect(window, "returnSelect", idaCall)
  
  return;
}
// *******************************************************************************

This is the function that executes when the IDA call is finished. I know it's getting here because of the alert message.

//*********************************************************************************
// After a user returns from Select IDA call
//*********************************************************************************
function returnSelect()
{
 alert("Need Value Returned Here")
  return;
}
// *******************************************************************************

I know there must be a way. I just can't figure out the code or syntax to get the EMPLOYEE number of the line the user clicked on. I found this in the Object Viewer, but it makes no sense to me and I can't figure it out.