How to get this working using spservices

Oct 28, 2013 at 8:46 PM
I have Category and sub category as list in the parent site (1 level up)
i have list in the parent say mappinglist.
this will the values in mapping list

title cat subcat
1 cat1 subcat1
1 cat1 subcat2
1 cat2 subcat1

in the drop of the page i have category and sub category
how do i look the category value to be based on the mapping list value
and cacade it to subcat based on cat and title