inviare upload files con ahahtext

[rocco.mod]

salve ragazzi sto facendo un lavoro dove usola classe ahahatext , dovrei passare anche dei files tipo immagini pero mi sono accorto che tutti i dati l invia tranne i files adesso comepotrei fare ?non me ne da errori funziona tutto tranne che non passa i files caricati, ho messo nel h print_r($_FILES); e mi da un array vuota cioe array(); mi aiutate? posto la classe

var completeAHAH = {

	loading : 'loading data...',

	ahah : function (url, target, delay, method, parameters) {

	  if ( ( method == undefined ) || ( method == "GET" ) || ( method == "get" ) ){
			
			this.creaDIV(target, this.loading);
			
			if (window.XMLHttpRequest) {
				req = new XMLHttpRequest();
			} 
			else if (window.ActiveXObject) {
				req = new ActiveXObject("Microsoft.XMLHTTP");
			}
			if (req) {
				req.onreadystatechange = function() {
					completeAHAH.ahahDone(url, target, delay, method, parameters);
				};
				req.open(method, url, true);
				req.send("");
			}
		}
		if ( (method == "POST") || (method == "post") ){

			this.creaDIV(target, this.loading);

			if (window.XMLHttpRequest) {
				req = new XMLHttpRequest();
			} 
			else if (window.ActiveXObject) {
				req = new ActiveXObject("Microsoft.XMLHTTP");
			}
			if (req) {
				req.onreadystatechange = function() {
					completeAHAH.ahahDone(url, target, delay, method, parameters);
				};
				req.open(method, url, true);
				req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
				req.send(parameters);
			 }
		}
	},
	
	creaDIV : function (target, html){

	   if (document.body.innerHTML){
			   document.getElementById(target).innerHTML = html;
	   }
	   else if (document.getElementById){
			   var element = document.getElementById(target);
			   var range = document.createRange();

			   range.selectNodeContents(element);
			   range.deleteContents();
			   element.appendChild(range.createContextualFragment(html));

	   }
	},

	execJS : function (node) {

		var st = node.getElementsByTagName('SCRIPT');
		var strExec;

		var bSaf = (navigator.userAgent.indexOf('Safari') != -1);
		var bOpera = (navigator.userAgent.indexOf('Opera') != -1);
		var bMoz = (navigator.appName == 'Netscape');

		for(var i=0;i<st.length; i++) {     
			if (bSaf) {
			  strExec = st[i].innerHTML;
			}
			else if (bOpera) {
			  strExec = st[i].text;
			}
			else if (bMoz) {
			  strExec = st[i].textContent;
			}
			else {
			  strExec = st[i].text;
			}
			try {
			  eval(strExec);
			} catch(e) {
			  alert(e);
			}
		}

	},	

	ahahDone : function (url, target, delay, method, parameters) {		
		if (req.readyState == 4) { 
			element = document.getElementById(target);
			if (req.status == 200) {

				//this.creaDIV(target, req.responseText);
				output = req.responseText;
				document.getElementById(target).innerHTML = output;
				var j = document.createElement("div");
				j.innerHTML = "_" + output + "_";
				this.execJS(j);

			} 		
			else {
				this.creaDIV(target, "ahah error:\n"+req.statusText);
			}
		}
	},

	/*

	@@ parameters : 
	fileName	= name of your cgi or other
	method		= GET or POST, default is GET
	formName	= name of your form
	dynamicTarget	= name of your dynamic Target DIV or other

	@@ usage : 
	<form id="formName" action="javascript:completeAHAH.likeSubmit('fileName', 'method', 'formName', 'dynamicTarget');">

	*/

	likeSubmit : function ( file, method, formName, target ) {

		var the_form = document.getElementById(formName);
		var num = the_form.elements.length;
		var url = "";
		var radio_buttons = new Array();
		var nome_buttons = new Array();
		var check_buttons = new Array();
		var nome_buttons = new Array();


		// submit radio values
		var j = 0;
		var a = 0;
		for(var i=0; i<the_form.length; i++){
			var temp = the_form.elements[i].type;
			if ( (temp == "radio") && ( the_form.elements[i].checked) ) { 
				nome_buttons[a] = the_form.elements[i].name;
				radio_buttons[j] = the_form.elements[i].value; 
				j++; 
				a++;
			}
		}
		for(var k = 0; k < radio_buttons.length; k++) {
			url += nome_buttons[k] + "=" + radio_buttons[k] + "&";
		}

		// submit checkbox values
		var j = 0;
		var a = 0;
		for(var i=0; i<the_form.length; i++){
			var temp = the_form.elements[i].type;
			if ( (temp == "checkbox") && ( the_form.elements[i].checked) ) { 
				nome_buttons[a] = the_form.elements[i].name;
				check_buttons[j] = the_form.elements[i].value; 
				j++; 
				a++;
			}
		}
		for(var k = 0; k < check_buttons.length; k++) {
			url += nome_buttons[k] + "=" + check_buttons[k] + "&";
		}

		// submit all kind of input		
		for (var i = 0; i < num; i++){	
			var chiave = the_form.elements[i].name;
			var valore = the_form.elements[i].value;
			var tipo = the_form.elements[i].type;

			if ( (tipo == "submit") || (tipo == "radio") || (tipo == "checkbox") ){}
			else {
				url += chiave + "=" + valore + "&";
			}
		}

		var parameters = url;
		url = file + "?" + url;

		if (method == undefined) { 
			method = "GET"; 	
		}
		if (method == "GET") { 
			this.ahah(url, target, '', method, ''); 
		}
		else { 
			this.ahah(file, target, '', method, parameters); 
		}
	}

};

[br1]

Come gia' ribadito tante altre volte, non e' possibile inviare files con l'oggetto XMLHTTP... come dice il suo nome il suo scopo e' trasmettere dati testuali, preferibilmente in formato XML.

ciao