Chyba v Ajax? Stále neběží...

function odstranBileZnaky(xml) {
	var i;
	for(i=0;i<xml.childNodes.length;i++) {
		var aktUzel = xml.childNodes[i];
		
			if(aktUzel.nodeType == 1) {
				odstranBileZnaky(aktUzel);			
			}
			
			if(((/^\s+$/.test(aktUzel.nodeValue))) && (aktUzel.nodeType == 3)) {
				xml.removeChild(xml.childNodes[i--]);			
			}
	
	}
}

 function httpSuccess(r) {
        try {
            
            return !r.status && location.protocol == "file:" ||
    
                ( r.status >= 200 && r.status < 300 ) ||
    
                r.status == 304 ||
    
                navigator.userAgent.indexOf("Safari") >= 0 && typeof r.status == "undefined";
        } catch(e){}
    
        return false;
    }

    function httpData(r,typ) {
        var ct = r.getResponseHeader("Content-Type");
    
   
        var data = !typ && ct && ct.indexOf("xml") >= 0;
    
       
        data = typ == "xml" || data ? r.responseXML : r.responseText;
    
        if ( typ == "script" )
            eval.call( window, data );
    
        return data;
    }


function Ajax(nastaveni) {
    var nastaveni = {
        typ: nastaveni.typ || "GET",
        url: nastaveni.url || "",
        timeout: nastaveni.timeout || 5000,
        onLoading: nastaveni.onLoading || function(){},
        onComplete: nastaveni.onComplete || function(){},
        onError: nastaveni.onError || function(){},
        onSuccess: nastaveni.onSuccess || function(){}
    };
    
    var xml = false;
    var mozzila = false;
    var timeoutLength = 5000;
    
    setTimeout(function(){
         pozadavekDokoncen = true;
    }, timeoutLength);
    
    	if(window.XMLHttpRequest) {
    		xml = new XMLHttpRequest();
    		mozzila = true;
    	}
    	else if(window.ActiveObject){
    		xml = new ActiveObject("Micosoft.XMLHTTP");
    	}
    	
    	if(xml) {
    		xml.open(nastaveni.typ, nastaveni.url, true);
    		
    		if ( xml.readyState == 4 && !pozadavekDokoncen ) {

              if(xml.responseXML && mozzila) {
    					odstranBileZnaky(xml.responseXML);
    				}   


            if ( httpSuccess( xml ) ) {
    				
                nastaveni.onSuccess(httpData( xml, nastaveni.typ ));

            } else {
                nastaveni.onError();
            }

            nastaveni.onComplete();

            xml = null;
        }
        
        }
        xml.send(null);
    }

<script src="./js/ajax.js"></script>
<script type="text/javascript">
Ajax({
	url: "./ajax/ajax.php",
	typ: "html",

	onSucces: function() {
		alert('Ahoj');
	}
	});
</script>