jQuery Grid Plugin - jqGrid

After I tried to add a data editing dialog to the master detail example, the grid is doing multiselection. What is wrong?

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navGrid('#pager10',{add:true,edit:true,del:true},
{height:280,reloadAfterSubmit:false}, // edit options
{height:280,reloadAfterSubmit:false}, // add options
{reloadAfterSubmit:false}, // del options
{} // search options
);

8<-------------------------------------------------------------------------------------------

Thanks in advance,

Alexandre