Permission Denied When using XMLHttpRequest.Open cross browser access

<html>
  <Head>
    <Title>Calling A WebService from HTML </Title>
  </Head>

<Body onload='GetDataFrmWS()'>
  <form name="Form1" id="Form1" runat="server" method="post">
    <div id="DisplayData" > </div>
    <div id="Menu2"></div>

  </form>

<script language='javascript'>

var objHttp;
var objXmlDoc;

function GetDataFrmWS()
{
  alert('I M Here');
  var func = getDataFromWS();

}


function getDataFromWS()
{

  if(window.ActiveXObject)
  {
     try
        {
        objHttp = new ActiveXObject('Msxml2.XMLHTTP');

    }
 catch (ex)
 {
  objHttp = new ActiveXObject('Microsoft.XMLHTTP');
 }

}
 catch (ex)
 {
  objHttp = new ActiveXObject('Microsoft.XMLHTTP');
 }

/* Function to create an XMLHTTP object for all browsers */
function getXMLHTTPObject(){
    var xmlHttp;
    	try{
    		// Firefox, Opera 8.0+, Safari
    		xmlHttp=new XMLHttpRequest();
    	}catch (e){
    		// Internet Explorer
    		try{
        		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    		 }catch (e){
        		try{
        			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
        		}catch (e){
        			alert("Your browser does not support AJAX!");
        			return false;
        		}
        	}
    	}
    	return xmlHttp;
}
/* End Function */