Ext.ajax.request的跨域问题如何解决？

Ext.Ajax.request({
            url:"http://service.winic.org/webservice/public/remoney.asp?uid=123&pwd=123",
            method:"GET",
            success: function(response,options)
            {
                Ext.getCmp('noteye').setText("余额：<font color=red>￥"+response.responseText+"</font>元");
            },
            failure: function(resp,opts) {
                 Ext.Msg.alert('错误', resp.responseText);
            }   
        });