title: JQGrid Inline Editing : Filter subcategory dropdown list based on another category dropdown
body: <p>I have a category and a subcategory column in a Jqgrid. I have enabled inline editing, both category and subcategory are dropdownlists columns (edittype:'select'). I need to filter the subcategory list based on the selected category. I wonder how can I acheive this functionlity?</p>
  
  <p>I tried the below event but its not working for me
   afterEditCell: function(rowid, celname, value, iRow, iCol) {
  //to do here
     }</p>
  
  <p>the above event doesn't get fired. my all column are editable </p>
  
  <p>Thanks,</p>