Accessing ASP.Net WebService using XMLHttpRequest and SOAP

I have a webService hosted at http://recpushdata.cyndigo.com/jobs.asmx . I would like to name this web service using XMLHttpRequest and SOAP. What I would like to do is that I have posted a client application that works fine with the web service, but when the client tries to access the same web service, it gives some error like: -

 <?xml version="1.0" encoding="utf-8" ?> 
- <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
- <soap:Body>
- <soap:Fault>
  <faultcode>soap:Server</faultcode> 
  <faultstring>Server was unable to process request. ---> Object reference not set to an instance of an object.</faultstring> 
  <detail /> 
  </soap:Fault>
  </soap:Body>
  </soap:Envelope>

      

        
        
        
      

    

Sorry, I can't figure it out?