/********************************
Funzione che sostituisce il SUBMIT, utile al passaggio di tutti i parametri
alla pagina che poi restituirą i valori a seconda dei parametri inseriti
esempio utilizzo: <a href="javascript:submit('nomefile.php', 'GET')">link</a>
********************************/
// This prints out text with html breaks
function textToHtml(text) {
// replace \n with <br>
text = text.replace(/\n/g, "<br>");
text = text.replace(/&/g,"and");
return encodeURI(text);

}

function submit(FILE, METHOD, TARGET,SUBMITPAGE){
	var num = document.forms[0].elements.length;
	if (SUBMITPAGE == "true"){
	    var url = "";

	    //radio button 
	    var j = 0;
	    var a = 0;
	    var radio_buttons = new Array();
	    var nome_buttons = new Array();
	    var the_form = window.document.forms[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] + "&";
	    }
	    //checkbox
	    var j = 0;
	    var a = 0;
	    var check_buttons = new Array();
	    var nome_buttons = new Array();
	    var the_form = window.document.forms[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] + "&";
	    }
	    for (var i = 0; i < num; i++){
    		
		    var key = document.forms[0].elements[i].name;
		    var value = document.forms[0].elements[i].value;
		    var otype = document.forms[0].elements[i].type;

		    if ( (otype == "submit") || (otype == "radio") || (otype == "checkbox") || (key == "__VIEWSTATE")) {}
		    else {
			    url += key + "=" + textToHtml(value) + "&";
		    }
	    }
	    var parameters = url;
	    url = FILE + "?" + url;
	}
	if (METHOD == undefined) { METHOD = "GET"; 	}
	if (METHOD == "GET") { ahah(url, TARGET, '', METHOD); }
	else { ahah(FILE, TARGET, '', METHOD, parameters); }
}

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

  if (method == undefined) { 
	  //document.getElementById(target).innerHTML = 'caricamento dati in corso...';
	  if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
	  } else if (window.ActiveXObject) {
		req = new ActiveXObject("Microsoft.XMLHTTP");
	  }
	  if (req) {
		req.onreadystatechange = function() {
			ahahDone(url, target, delay, method, parameters);
		};
		req.open("GET", url, true);
		req.send("");
	  }  
  }
  if ( (method == "GET") || (method == "get") )
  {
	  //document.getElementById(target).innerHTML = 'caricamento dati in corso...';
	  if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
	  } else if (window.ActiveXObject) {
		req = new ActiveXObject("Microsoft.XMLHTTP");
	  }
	  if (req) {
		req.onreadystatechange = function() {
			ahahDone(url, target, delay, method, parameters);
		};
		req.open(method, url, true);
		req.send("");
	  }
  }

  if ( (method == "POST") || (method == "post") )
  {
	  //document.getElementById(target).innerHTML = 'caricamento dati in corso...';
	  if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
	  } else if (window.ActiveXObject) {
		req = new ActiveXObject("Microsoft.XMLHTTP");
	  }
	  if (req) {
		req.onreadystatechange = function() {
			ahahDone(url, target, delay, method, parameters);
		};
		req.open(method, url, true);
		req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		req.send(parameters);
	  }
  }
}  

function ahahDone(url, target, delay, method, parameters) {
  if (req.readyState == 4) { 
    if (req.status == 200) { 
      document.getElementById(target).innerHTML = req.responseText;
    } else {
      document.getElementById(target).innerHTML="ahah error:\n"+req.statusText;
    }
  }
}