title: how to build jqgrid context menu from top level toolbar
body: <p><a href="https://stackoverflow.com/questions/8451982/custom-values-to-context-menu-items-in-jqgrid">Custom values to Context Menu Items in JQgrid</a> contains great sample about adding context menu to jqgrid.
  If edit,delete, add operations are dynamically disabled, synching context menu with toolbar requires additional coding.</p>
  
  <p>How to create context menu automatically from jqgrid top level toolbar so that additional coding is not required? Context menu should contain toolbar buttons icons and button titles become menu item titles.
  Selection menu triggers toolbar button click event.</p>
  
  <p>Or if this is not possible, how to sync context menu items with toolbar? Fox example, if navtoolbar call has del:false  , Delete command in context menu should not appear or appear disabled.</p>