I want to perform event handling on a dropdownlist.
For example:
I have a table costing group with columns(id,groupname,blockname,flatname...)
groupname is a dropdownlist having " groupA, groupB,.."
Blockname,flatname are also dropdown list but the data comes from other table.
Now if i select groupA, then only blockname field which is a dropdown must be accessible and Flatname field which is a dropdown must be deactivated .