title: how to call sharepoint fast search web service from javascript?
body: <p>How can I call methods from sharepoint fast  search web service ex: QueryEx , GetQuerySuggestions 
  I followed this 
  <a href="http://blogs.msdn.com/b/pasen/archive/2012/04/01/using-sharepoint-2010-search-webservice-in-javascript-for-fast-search-for-sharepoint-2010.aspx" rel="nofollow">Article</a> </p>
  
  <p>but every time i get this error : </p>
  
  <p><code>&lt;soap:envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"&gt;&lt;faultcode&gt;soap:Client&lt;/faultcode&gt;&lt;faultstring&gt;Data at the root level is invalid. Line 1, position 1.&lt;/faultstring&gt;&lt;/soap:envelope&gt;</code></p>
  
  <p>I also check the outgoing message with fiddler , and i found that the body is 0 and it returns "401 Unauthorized"
  any ideas please ?</p>