var XMLHttpRequestObject = false;
var onprogress = false;
function utworzXHRO()
			{
 				 var wersjeMSXML = new Array(
    				"MSXML2.XMLHTTP.6.0",
    				"MSXML2.XMLHTTP.5.0",
    				"MSXML2.XMLHTTP.4.0",
    				"MSXML2.XMLHTTP.3.0",
    				"MSXML2.XMLHTTP",
    				"Microsoft.XMLHTTP"
	  		);
	  		
  		try{
    		XMLHttpRequestObject = new XMLHttpRequest();
    		XMLHttpRequestObject.overrideMimeType("text/xml");
    		return;
  			}
  		catch(e){
    		for (var indeks in wersjeMSXML){
      		try{
        			XMLHttpRequestObject = new ActiveXObject(wersjeMSXML[indeks]);
        			return;
      			}
     			catch(e){
      			}
 		 		}
    			return null;
  			}
		}