want to get download prompt

Here is the Jquery request sent to MyAction class

$.ajax({
                  type: "POST",
                  url: "MyAction",
                  data:  $('form').serialize(),
                  cache: false,
                  dataType: "html",
                  success: function(result){
                  
                   // what to write here so that I can get doc download prompt
               
                }
 });
 
 


Struts MyAction  retruns "result.jsp"
      
      
result.jsp
------------
 <%
response.setContentType("application/doc");
response.setHeader("Content-disposition","attachment; filename=abc.doc;");
// blah
// blah
%>