jQuery Grid Plugin - jqGrid

Hi,

i am new to jqgrid and after searching out for lot of examples, i got a grid loading and working fine.  I have the edit button in the navGrid.  when i select a row and click edit, the edit dialog is popping up.

but i want to control this action.  i want the edit dialog to show up only when some condition meets.  condition can be like a variable being set in database or javascript.

is it possible?

my code is like below

..}).jqGrid('navGrid','#pager',{},editSettings,addSettings,delSettings,…

editSettings = {

onclickSubmit:onclickSubmitLocal                    closeAfterEdit:true,                    savekey: [true,13],                    closeOnEscape:true,                    reloadAfterSubmit:false, jqModal:false,

                }                    

basically i have two buttons on my page - "Lock for edit" and "unlock".  if the user wants to make any change, they shd first lock the table, so that it is visible to others in read only mode.  so without clicking "lock for edit" button, they shd not be able to edit or delete the rows.  how do i do it?

please help.

Thanks.