how to append an option to Jquery Ui MultiSelect Plugin

  
  
  
  

   
   
   
   <
   
   
   
   select 
   
   
   
   title
   
   
   
   =
   
   
   
   "myselect" 
   
   
   
   multiple
   
   
   
   =
   
   
   
   "multiple" 
   
   
   
   id
   
   
   
   =
   
   
   
   "myselect" 
   
   
   
   name
   
   
   
   =
   
   
   
   "myselect" 
   
   
   
   size
   
   
   
   =
   
   
   
   "5"
   
   
   
   >
  
  
  
  
  
  
  
  
 
   
   
   
   <
   
   
   
   /select>
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
 
   
   
   
   var 
   
   
   
   option 
   
   
   
   = 
   
   
   
   '<option value="' 
   
   
   
   + 
   
   
   
   value 
   
   
   
   + 
   
   
   
   '">' 
   
   
   
   + 
   
   
   
   value
   
   
   
   + 
   
   
   
   '</option>'
   
   
   
   ;
  
  
  
  
  
  
  
  
 
   
   
   
   $
   
   
   
   (
   
   
   
   '#myselect'
   
   
   
   ).
   
   
   
   append
   
   
   
   (
   
   
   
   option
   
   
   
   );
  
  
  
  
  
  
  
  
 
   
   
   
   $
   
   
   
   (
   
   
   
   '#myselect'
   
   
   
   ).
   
   
   
   multiselect
   
   
   
   ( 
   
   
   
   'refresh' 
   
   
   
   );
   
   
   
   //刷新select数据