如何在远程服务器上使用jquery调用webservice?

我创建了一个html页面，其中使用jquery调用了webservice.
它可以在本地工作，但在远程服务器上则不能工作.
这是javascript
中使用的代码

I have created one html page,in that using jquery i have call webservice .
It will work locally ,but on remote server it can not works.
This is the code using in javascript

$.ajax({

  type: "POST",
  url: "http://example.com/test.asmx/helloworld",
  data: "{'bannerid':'" + id + "'}",
  contentType: "application/json; charset=utf-8",
  dataType: "json",

  success: function(msg) {

   //$(divid1).removeClass('loading');
   $(divid1).html(msg)

  }
});