jquery operation ListBox left and right select each other

Enables the selection of the left and right two listbox

The code is as follows:

1         functionListbox_move (Listfrom, listto) {2             varSize = $j ("#" + listfrom + "option"). Size ();3             varSelsize = $j ("#" + Listfrom + "option:selected"). Size ();4             varstrvalue = "";5             if(Size > 0 && selsize > 0) {6$j. Each ($j ("#" + Listfrom + "option:selected"),function(I, own) {7                     varStext =$j (Own). text ();8                     varsvalue =$j (Own). Val ();9                     varFlag =true;Ten$j. Each ($j ("#" + listto + "option"),function(ID, ownto) { One                         if($j (Ownto). val () = =svalue) { AFlag =false; -                         } -                     }); the                     if(flag) { -$j ("#" + Listto). Append ("<option value=\" "+ svalue +" \ ">" + stext + "</option>"); -strvalue + = $j (Own). Text () + ":" +$j (Own). Val (); -strvalue + = ","; +                     } - $j (Own). Remove (); +$j ("#" + Listfrom + ""). Children ("Option:first"). attr ("Selected",true); A                 }); at}Else { -                 if(listfrom== ' Listbcos ') { -Alert (' Please select the information you want to import first! ‘); -}Else { -Alert (' Please select the information you want to delete first! ‘); -                 } in             } -}

Interface elements:

1  　　　　　 <TDwidth= "28%">2            <inputID= "Txtcos"type= "text"width= "100%" />3            <SelectID= "Listbcos"multiple= "multiple"style= "width:200px; height:130px;"></Select>4          </TD>5          <TDAlign= "Center"width= "12%"><BR/> <BR/> <BR/>6             <inputtype= "button"ID= "Btnimport"value= "Import >>"style= "cursor:p ointer"onclick= "Listbox_move (' Listbcos ', ' listbcontent ')"/><BR/><BR/>7             <inputtype= "button"ID= "Btndel"value= "<< Delete"style= "cursor:p ointer"onclick= "Listbox_move (' listbcontent ', ' Listbcos ')"/><BR/> <BR/><BR/>8          </TD>9          <TDwidth= "28%">Ten              <SelectID= "Listbcontent"multiple= "multiple"style= "width:200px; height:150px;"></Select> One          </TD>

jquery operation ListBox left and right select each other