Required library edition: 
 Required library file: dhtmlxgrid.js
selects row by ID
 row_id - row id
 
 preserve - {true|false} preserve previously selected (optional, false by default). Multi select mode should be enabled.
 
 show - true/false - scroll row to view (optional, true by default)
 
 call - true if to call onRowSelect function (optional, false by default)
 
   //minimal parameters set
   mygrid.selectRowById('row1');
   //maximal parameters set
   mygrid.selectRowById('row1',true,true,true);
Please make sure that necesary row is loaded before calling this method.
See also: selectRow, selectAll