Error invoking Web Services Using JavaScript

HI Experts,

I am trying to query on Opportunity using opportunity name as the search criteria.I am getting the required result when i use SOAP UI to send the SOAP request, but when i pass the same soap request using JavaScript then i am getting an error stating Error in Posting Request [Object Error].

Below is the SOAP request i am passing

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:m0="urn:/crmondemand/xml/Opportunity/Query">