How to maintain style of Multiple Select DropDownList on postback in ASP.Net

Problem solved with the following code snippet..

$(function () {             /*              * Description  : On UpdatePanel Refresh              */             var prm = Sys.WebForms.PageRequestManager.getInstance();             if (prm != null) {                 prm.add_endRequest(function (sender, e) {                     if (sender._postBackSettings.panelsToUpdate != null) {                         $('[id*=lstItems]').multiselect();                         $('[id*=lstItems]').multiselect({                             includeSelectAllOption: true                         });                     }                 });             };         });

Thanks for the reply..