var http_request = null;
function makePOSTRequest(url, parameters) {
  if (window.XMLHttpRequest) { // Mozilla, Safari,...
     http_request = new XMLHttpRequest();
     if (http_request.overrideMimeType) {
     	// set type accordingly to anticipated content type
        http_request.overrideMimeType('text/html');
     }
  } else if (window.ActiveXObject) { // IE
     try {
        http_request = new ActiveXObject("Microsoft.XMLHTTP");
     } catch (e) {
        try {
           http_request = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {}
     }
  }
  if (!http_request) {
     alert('Cannot create XMLHTTP instance');
     return false;
  }
  
  http_request.onreadystatechange = alertContents;
  http_request.open('POST', url, true);
  http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded; charset=UTF-8");
  //http_request.setRequestHeader("Content-length", parameters.length);
  //http_request.setRequestHeader("Connection", "close");
  http_request.send(parameters);

}

function alertContents() {
  if (http_request.readyState == 4) {
     if (http_request.status == 200) {
        //alert(http_request.responseText);
        document.getElementById('result').innerHTML = http_request.responseText;
        reloadImage();          
     } else {
        alert('There was a problem with the request.');
        reloadImage();
     }
  }
}

function captcha(obj){
  var txturl = encodeURI(document.getElementById("url").value);
  var txtcode = encodeURI(document.getElementById("code").value);
  var txtstrhash = encodeURI(document.getElementById("hash").value);

  if ( ((obj == "create") && (txturl == "")) ){
	  document.getElementById('result').innerHTML = "<br /><b class='invalid'>Insert url</b><br /><br />";
  	return false;
  };
  
  if ( ((obj == "validate") && (txtcode == "") && (txtstrhash == "")) ){
	  document.getElementById('result').innerHTML = "<br /><b class='invalid'>Empty fields</b><br /><br />";
  	return false;
  };
  
	document.getElementById('leftSide').style.visibility='hidden';
	document.getElementById('popcaptcha').style.visibility='visible';
	numrandom = Math.random();
	initPop('popcaptcha');
	document.getElementById('popcaptcha').innerHTML="<p align='center'><b>CAPTCHA</b></p><p align='center'><img src='captcha/captcha.php?key="+numrandom+" #' alt='captcha' /></p><p><input name='txt_captcha' type='text' id='txt_captcha' class='textboxcaptcha' /></p><p align='center'><input name='Close' type='button' value='Close' class='buttons' onclick=\"document.getElementById('popcaptcha').style.visibility='hidden';initPop('leftSide');document.getElementById('leftSide').style.visibility='visible'\" /><input name='Submit' type='button' value='Ok' class='buttons' onclick='get(\""+obj+"\");' /></p>"
	document.getElementById('txt_captcha').focus();
}


function get(obj) {
	initPop('leftSide');
	document.getElementById('leftSide').style.visibility='visible';
	document.getElementById('popcaptcha').style.visibility='hidden';
	// read input value
  var captcha = encodeURI( document.getElementById("txt_captcha").value );
  // uso encodeUriComponent al posto di econdeURI per problemi di enconding con le &
  var url = encodeURIComponent( document.getElementById("url").value );
  var ua = encodeURI( document.getElementById("comboua").value );
  if (! ((ua == "ff") || (ua == "ie") || (ua == "op") || (ua == "ch")) ){
  	return false;
  };  
  var code = encodeURI( document.getElementById("code").value );
  var strhash = encodeURI( document.getElementById("hash").value );
  var typehash = document.getElementById("combohash").value;
  if (! ((typehash == "MD5") || (typehash == "SHA1")) ){
  	return false;
  };
  // compose method
  var create = "u=" + url + "&cp=" + captcha + "&b=" + ua;
  var validate = "c=" + code + "&s=" + strhash + "&h=" +  typehash + "&cp=" + captcha;
  // image wait
  document.getElementById("result").innerHTML = "<img src='images/loader.gif' />";
	// send request
  if (obj == "create"){
	  //setTimeout("AJAXReq('POST','include/ajax.php?act=create',true,function (){doneresp('result','1')},stringa);", 1000);
  	setTimeout("makePOSTRequest('include/ajax.php?act=create', '"+create+"');", 1000);
  } else {
  	setTimeout("makePOSTRequest('include/ajax.php?act=validate', '"+validate+"');", 1000);
  	//setTimeout('reloadImage()', 2000);
  }
}
 
function puliscidiv(id, content) {
	initPop(id);
  document.getElementById(id).innerHTML = content;
}

function reloadImage()
{
 img = document.getElementById('iframe1');
 img.src = img.src;
 document.getElementById('txt_captcha').value = '';
 return false;
}

function pause(numSeconds) { 
	var now, goalTime; 
	now = new Date(); 
	goalTime = now.getTime() + 1000*numSeconds; 
	while (now.getTime() < goalTime) { 
		now = new Date(); 
	} 
} 

function initPop(imageId) {
  image = document.getElementById(imageId);
  setOpacity(image, 0);
  image.style.visibility = 'visible';
  fadeIn(imageId,0);
}

function setOpacity(obj, opacity) {
  opacity = (opacity == 100)?99.999:opacity;
  // IE/Win
  obj.style.filter = "alpha(opacity:"+opacity+")";
  // Safari<1.2, Konqueror
  obj.style.KHTMLOpacity = opacity/100;
  // Older Mozilla and Firefox
  obj.style.MozOpacity = opacity/100;
  // Safari 1.2, newer Firefox and Mozilla, CSS3
  obj.style.opacity = opacity/100;
}

function fadeIn(objId,opacity) {
  if (document.getElementById) {
    obj = document.getElementById(objId);
    if (opacity <= 100) {
      setOpacity(obj, opacity);
      opacity += 10;
      window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 100);
    }
  }
}

var myReq = null;
function AJAXReq(methodtype,url,asynch,resp){
 if(window.XMLHttpRequest){
  myReq = new XMLHttpRequest();
 }else if(window.ActiveXObject){
   myReq = new ActiveXObject("Msxml2.XMLHTTP");
    if(!myReq){
      myReq = new ActiveXObject("Microsoft.XMLHTTP");
    }
 }
 
 if(myReq){
  if(methodtype.toLowerCase() != "post"){
    execfunc(methodtype,url,asynch,resp);
  }else{
    var args = arguments[4];
    execfunc(methodtype,url,asynch,resp,args);
  }
 }else{
   alert("Your browser doesn't support AJAX utilities");
 }
}

function execfunc(methodtype,url,asynch,resp){
  try{
    myReq.onreadystatechange = resp;
    myReq.open(methodtype,url,asynch);
    
    if(methodtype.toLowerCase() == "post"){
      myReq.setRequestHeader("Content-Type",
                             "application/x-www-form-urlencoded; charset=UTF-8");
      myReq.send(arguments[4]);
    }else{
      myReq.send(null);
    }
  }catch(errv){
    alert("Enable to contact the server\nError: "+errv.message);
  }
}

/*Just a shortcut funciont to getElementById*/
function $(id){
  return document.getElementById(id);
}

function PreparaDati(quale){
  stringa = "";
  var form = document.forms[quale];
  var numeroElementi = form.elements.length;
 
  for(var i = 0; i < numeroElementi; i++){
    if(i < numeroElementi-1){
     if((form.elements[i].type == 'radio' || form.elements[i].type == 'checkbox') && form.elements[i].checked == true){
       stringa += form.elements[i].name+"="+encodeURIComponent(form.elements[i].value)+"&";
     }else if(form.elements[i].type != 'radio' && form.elements[i].type != 'checkbox'){
      stringa += form.elements[i].name+"="+encodeURIComponent(form.elements[i].value)+"&";
     }
    }else{
     if((form.elements[i].type == 'radio' || form.elements[i].type == 'checkbox') && form.elements[i].checked == true){
       stringa += form.elements[i].name+"="+encodeURIComponent(form.elements[i].value);
     }else if(form.elements[i].type != 'radio' && form.elements[i].type != 'checkbox'){
      stringa += form.elements[i].name+"="+encodeURIComponent(form.elements[i].value);
     }
    } 
  }
}

function doneresp(id,wait){
 if(myReq.readyState == 4 && myReq.status == 200){
   close(wait);	
  if(myReq.responseText.indexOf("Error") != -1){
    alert(myReq.responseText);
  }else{
    document.getElementById(id).innerHTML = myReq.responseText;
  }
 } 
}


function loader(id,text,img){
  document.getElementById(id).style.display = 'block';
  document.getElementById(id).style.visibility = 'visible';
  document.getElementById(id).innerHTML = '<img class="imgalign" alt="loader" src="'+img+'" /><br />'+text;
}

function close(id){
  var div = document.getElementById(id);
  div.style.visibility = 'hidden';
  div.style.display = 'none';
}

function sendemail(id,wait,f){
  loader(wait,'','images/loader.gif');
  PreparaDati(f);
  setTimeout("AJAXReq('POST','include/ajax.php?act=emailit',true,function (){doneresp('"+id+"','"+wait+"')},stringa);", 1000);
}