Need service locator for all Sitefinity services

If I need to use user service, I create hidden field like this: <input type="hidden" id="usersServiceUrl" value='@Url.Content("~/Sitefinity/Services/Security/Users.svc/")' />  and then access it through the java script: var serviceUrl = $('input#usersServiceUrl').val();

Is it possible to be created a service locator where I can write: SitefinityServices.getUserServiceUrl()
