/**
* Create XMLHTTPRequest. Compatible IE < 7
*/

function getXMLHttpRequest() 
{
    var pXHR = null;
	
    if (window.XMLHttpRequest || window.ActiveXObject) 
    {
        // IE < 7 require activeXObject to create XMLHTTPRequest
        // 2 ways are possible depending XMLHTTP
	    if (window.ActiveXObject) 
	    {
		    try 
		    {
				pXHR = new ActiveXObject("Msxml2.XMLHTTP");
			} 
			catch(e) 
			{
				pXHR = new ActiveXObject("Microsoft.XMLHTTP");
			}
		} 
		else 
	    {
			pXHR = new XMLHttpRequest(); 
		}
	} 
	else 
	    // browser doesn't support XMLHTTP
		return null;
	
	return pXHR;
}