/**
 *  author:		Timothy Groves - http://www.brandspankingnew.net
 *	version:	1.2 - 2006-11-17
 *              1.3 - 2006-12-04
 *              2.0 - 2007-02-07
 *
 *  cambios a la version para implementacion de JSONP: Oliver Lopez, 15/03/2011
 *
 */

var useBSNns;

if (useBSNns)
{
	if (typeof(bsn) == "undefined")
		bsn = {}
	_bsn = bsn;
}
else
{
	_bsn = this;
}

if (typeof(_bsn.Autosuggest) == "undefined")
	_bsn.Autosuggest = {}

_bsn.AutoSuggest = function (fldID, param) {
    // no DOM - give up!
    //
    if (!document.getElementById)
        return false;

    // get field via DOM
    //
    this.fld = _bsn.DOM.getElement(fldID);

    if (!this.fld)
        return false;

    // init variables
    //
    this.sInput = "";
    this.nInputChars = 0;
    this.aSuggestions = [];
    this.iHighlighted = 0;

    // parameters object
    //
    this.oP = (param) ? param : {};

    // defaults	
    //
    if (!this.oP.minchars) this.oP.minchars = 3;
    if (!this.oP.method) this.oP.meth = "get";
    if (!this.oP.varname) this.oP.varname = "input";
    if (!this.oP.className) this.oP.className = "autosuggest";
    if (!this.oP.timeout) this.oP.timeout = 25000;
    if (!this.oP.delay) this.oP.delay = 0;
    if (!this.oP.offsety) this.oP.offsety = -5;
    if (!this.oP.shownoresults) this.oP.shownoresults = true;
    if (!this.oP.noresults) this.oP.noresults = "No hay resultados!";
    if (!this.oP.maxheight && this.oP.maxheight !== 0) this.oP.maxheight = 250;
    if (!this.oP.cache && this.oP.cache != false) this.oP.cache = false;

    // set keyup handler for field
    // and prevent autocomplete from client
    //
    var pointer = this;

    // NOTE: not using addEventListener because UpArrow fired twice in Safari
    //_bsn.DOM.addEvent( this.fld, 'keyup', function(ev){ return pointer.onKeyPress(ev); } );

    this.fld.onkeypress = function (ev) { return pointer.onKeyPress(ev); }
    this.fld.onkeyup = function (ev) { return pointer.onKeyUp(ev); }

    //Llamo a la funcion onKeyDown para capturar el tabulador.
    this.fld.onkeydown = function (ev) { return pointer.onKeyDown(ev); }

    this.fld.setAttribute("autocomplete", "off");
}


//El tabulador solo responde al evento onKeyDown.
//He cambiado/creado cosas en las lineas: 75,76 82-99 y 392,393.
_bsn.AutoSuggest.prototype.onKeyDown = function (ev) {
  var key = (window.event) ? window.event.keyCode : ev.keyCode;
  var TAB = 9;
  var bubble = true;
  var cajaDestino = _bsn.DOM.getElement("txtIATARegreso");
  var fecha = _bsn.DOM.getElement("lstDiaIda");
  if (key == TAB) {
    this.setHighlightedValue();
    if (window.event.srcElement.id == "txtIATAIda") {
      //Cambio foco
      cajaDestino.focus();
      //Lo dejo Seleccionado
      cajaDestino.select();
    }
    else {
      fecha.focus();
    }

    bubble = false;
  }
  return bubble;
}

_bsn.AutoSuggest.prototype.onKeyPress = function(ev)
{	
	var key = (window.event) ? window.event.keyCode : ev.keyCode;
	// set responses to keydown events in the field
	// this allows the user to use the arrow keys to scroll through the results
	// ESCAPE clears the list
	// TAB sets the current highlighted value
	//
	var RETURN = 13;
	var TAB = 9;
	var ESC = 27;
	
	var bubble = true;

	switch(key)
	{
		case RETURN:
			this.setHighlightedValue();
			bubble = false;
			break;

		case ESC:
			this.clearSuggestions();
			break;
	}

	return bubble;
}

_bsn.AutoSuggest.prototype.onKeyUp = function(ev)
{
	var key = (window.event) ? window.event.keyCode : ev.keyCode;
	
	// set responses to keydown events in the field
	// this allows the user to use the arrow keys to scroll through the results
	// ESCAPE clears the list
	// TAB sets the current highlighted value
	//

	var ARRUP = 38;
	var ARRDN = 40;
	
	var bubble = true;

	switch(key)
	{
		case ARRUP:
			this.changeHighlight(key);
			bubble = false;
			break;
		case ARRDN:
			this.changeHighlight(key);
			bubble = false;
			break;
		default:
			this.getSuggestions(this.fld.value);
	}

	return bubble;
}

_bsn.AutoSuggest.prototype.getSuggestions = function (val) {

  // if input stays the same, do nothing
  //
  if (val == this.sInput)
    return false;
    
  // input length is less than the min required to trigger a request
  // reset input string
  // do nothing
  //
  if (val.length < this.oP.minchars) {
    this.sInput = "";
    return false;
  }

  // if caching enabled, and user is typing (ie. length of input is increasing)
  // filter results out of aSuggestions from last request
  //
  if (val.length > this.nInputChars && this.aSuggestions.length && this.oP.cache) {
    var arr = [];
    for (var i = 0; i < this.aSuggestions.length; i++) {
      if (this.aSuggestions[i].value.substr(0, val.length).toLowerCase() == val.toLowerCase())
        arr.push(this.aSuggestions[i]);
    }

    this.sInput = val;
    this.nInputChars = val.length;
    this.aSuggestions = arr;
    
    this.createList(this.aSuggestions);
    return false;
  }
  else
  // do new request
  //
  {
    this.sInput = val;
    this.nInputChars = val.length;
    var pointer = this;
    clearTimeout(this.ajID);
    this.ajID = setTimeout(function () { pointer.doAjaxRequest() }, this.oP.delay);
  }

  return false;
}

_bsn.AutoSuggest.prototype.doAjaxRequest = function () {

  var pointer = this;

  // create ajax request
  var url = this.oP.script + this.oP.varname + "=" + escape(this.fld.value);
  var meth = this.oP.meth;

  /*var onSuccessFunc = function (req) { pointer.lanzaJSONP; pointer.setSuggestions(req) };
  var onErrorFunc = function (status) { alert("AJAX error: " + status); };

  var myAjax = new _bsn.Ajax();
  myAjax.makeRequest(url, meth, onSuccessFunc, onErrorFunc);*/

  pointer.lanzaJSONP(url);
  miPrototipo = pointer;
}

var miPrototipo = "";

_bsn.AutoSuggest.prototype.lanzaJSONP = function (url) {
    var head = document.getElementsByTagName("head")[0];
    var script = document.createElement("script");
    script.type = "text/javascript";
    script.src = url;
    head.appendChild(script);
  }

  var devDestinos = function (json) {
    miPrototipo.oP.json = true;
    miPrototipo.setSuggestions(json);
  }

  _bsn.AutoSuggest.prototype.setSuggestions = function (req) {
    this.aSuggestions = [];

    if (this.oP.json) {
      /*var jsondata = eval('(' + req.responseText + ')');

      for (var i = 0; i < jsondata.results.length; i++) {
      this.aSuggestions.push({ 'id': jsondata.results[i].id, 'value': jsondata.results[i].value, 'info': jsondata.results[i].info });
      }*/
      for (var i = 0; i < req.results.length; i++) {
        this.aSuggestions.push({ 'id': req.results[i].id, 'value': req.results[i].value, 'info': req.results[i].info });
      }
    }
    else {

      var xml = req.responseXML;

      // traverse xml
      //
      var results = xml.getElementsByTagName('results')[0].childNodes;

      for (var i = 0; i < results.length; i++) {
        if (results[i].hasChildNodes())
          this.aSuggestions.push({ 'id': results[i].getAttribute('id'), 'value': results[i].childNodes[0].nodeValue, 'info': results[i].getAttribute('info') });
      }

    }

    this.idAs = "as_" + this.fld.id;
    this.createList(this.aSuggestions);
  }

  _bsn.AutoSuggest.prototype.createList = function (arr) {
      var pointer = this;


      // get rid of old list
      // and clear the list removal timeout
      //
      _bsn.DOM.removeElement(this.idAs);
      this.killTimeout();


      // create holding div
      //
      var div = _bsn.DOM.createElement("div", { id: this.idAs, className: this.oP.className });

      var hcorner = _bsn.DOM.createElement("div", { className: "as_corner" });
      var hbar = _bsn.DOM.createElement("div", { className: "as_bar" });
      var header = _bsn.DOM.createElement("div", { className: "as_header" });
      header.appendChild(hcorner);
      header.appendChild(hbar);
      div.appendChild(header);

      // create and populate ul
      //
      var ul = _bsn.DOM.createElement("ul", { id: "as_ul" });

      // loop throught arr of suggestions
      // creating an LI element for each suggestion
      //
      for (var i = 0; i < arr.length; i++) {
          // format output with the input enclosed in a EM element
          // (as HTML, not DOM)
          //
          var val = arr[i].value;
          var st = val.toLowerCase().indexOf(this.sInput.toLowerCase());
          var output = val.substring(0, st) + "<em>" + val.substring(st, st + this.sInput.length) + "</em>" + val.substring(st + this.sInput.length);


          var span = _bsn.DOM.createElement("span", {}, output, true);
          if (arr[i].info != "") {
              var br = _bsn.DOM.createElement("br", {});
              span.appendChild(br);
              var small = _bsn.DOM.createElement("small", {}, arr[i].info);
              span.appendChild(small);
          }

          var a = _bsn.DOM.createElement("a", { href: "#" });

          var tl = _bsn.DOM.createElement("span", { className: "tl" }, " ");
          var tr = _bsn.DOM.createElement("span", { className: "tr" }, " ");
          a.appendChild(tl);
          a.appendChild(tr);

          a.appendChild(span);
         
          a.name = i + 1;
          a.onclick = function () { pointer.setHighlightedValue(); return false; }
          a.onmouseover = function () { pointer.setHighlight(this.name); }

          var li = _bsn.DOM.createElement("li", {}, a);

          ul.appendChild(li);
      }

      // no results
      //
      if (arr.length == 0) {
          var li = _bsn.DOM.createElement("li", { className: "as_warning" }, this.oP.noresults);

          ul.appendChild(li);
      }


      div.appendChild(ul);


      var fcorner = _bsn.DOM.createElement("div", { className: "as_corner" });
      var fbar = _bsn.DOM.createElement("div", { className: "as_bar" });
      var footer = _bsn.DOM.createElement("div", { className: "as_footer" });
      footer.appendChild(fcorner);
      footer.appendChild(fbar);
      div.appendChild(footer);

      // get position of target textfield
      // position holding div below it
      // set width of holding div to width of field
      //
      var pos = _bsn.DOM.getPos(this.fld);

      div.style.left = pos.x + "px";
      div.style.top = (pos.y + this.fld.offsetHeight + this.oP.offsety) + "px";
      div.style.width = this.fld.offsetWidth + "px";

      // set mouseover functions for div
      // when mouse pointer leaves div, set a timeout to remove the list after an interval
      // when mouse enters div, kill the timeout so the list won't be removed
      //
      div.onmouseover = function () { pointer.killTimeout() }
      div.onmouseout = function () { pointer.resetTimeout() }


      // add DIV to document
      //
      document.getElementsByTagName("body")[0].appendChild(div);

      // currently no item is highlighted
      //
      this.iHighlighted = 0;

      // remove list after an interval
      //
      var pointer = this;
      this.toID = setTimeout(function () { pointer.clearSuggestions() }, this.oP.timeout);

      //Me posiciono en el primero de la lista
      pointer.setHighlight(1)
  }

_bsn.AutoSuggest.prototype.changeHighlight = function(key)
{	
	var list = _bsn.DOM.getElement("as_ul");
	if (!list)
		return false;
	
	var n;

	if (key == 40)
		n = this.iHighlighted + 1;
	else if (key == 38)
		n = this.iHighlighted - 1;
	
	
	if (n > list.childNodes.length)
		n = list.childNodes.length;
	if (n < 1)
		n = 1;
	
	
	this.setHighlight(n);
}

_bsn.AutoSuggest.prototype.setHighlight = function(n)
{
	var list = _bsn.DOM.getElement("as_ul");
	if (!list)
		return false;
	
	if (this.iHighlighted > 0)
		this.clearHighlight();
	
	this.iHighlighted = Number(n);
	
	list.childNodes[this.iHighlighted-1].className = "as_highlight";


	this.killTimeout();
}

_bsn.AutoSuggest.prototype.clearHighlight = function()
{
	var list = _bsn.DOM.getElement("as_ul");
	if (!list)
		return false;
	
	if (this.iHighlighted > 0)
	{
		list.childNodes[this.iHighlighted-1].className = "";
		this.iHighlighted = 0;
	}
}

_bsn.AutoSuggest.prototype.setHighlightedValue = function ()
{
	if (this.iHighlighted)
	{
		this.sInput = this.fld.value = this.aSuggestions[ this.iHighlighted-1 ].value;
		
		// move cursor to end of input (safari)
		//
		this.fld.focus();
		if (this.fld.selectionStart)
			this.fld.setSelectionRange(this.sInput.length, this.sInput.length);
		

		this.clearSuggestions();
		
		// pass selected object to callback function, if exists
		//
		if (typeof(this.oP.callback) == "function")
			this.oP.callback( this.aSuggestions[this.iHighlighted-1] );
	}
}

_bsn.AutoSuggest.prototype.killTimeout = function()
{
	clearTimeout(this.toID);
}

_bsn.AutoSuggest.prototype.resetTimeout = function()
{
	clearTimeout(this.toID);
	var pointer = this;
	this.toID = setTimeout(function () { pointer.clearSuggestions() }, 1000);
}

_bsn.AutoSuggest.prototype.clearSuggestions = function ()
{
	
	this.killTimeout();
	
	var ele = _bsn.DOM.getElement(this.idAs);
	var pointer = this;
	if (ele)
	{
		var fade = new _bsn.Fader(ele,1,0,250,function () { _bsn.DOM.removeElement(pointer.idAs) });
	}
}

// AJAX PROTOTYPE _____________________________________________
if (typeof(_bsn.Ajax) == "undefined")
	_bsn.Ajax = {}

_bsn.Ajax = function ()
{
	this.req = {};
	this.isIE = false;
}
_bsn.Ajax.prototype.makeRequest = function (url, meth, onComp, onErr)
{
	
	if (meth != "POST")
		meth = "GET";
	
	this.onComplete = onComp;
	this.onError = onErr;
	
	var pointer = this;
	
	// branch for native XMLHttpRequest object
	if (window.XMLHttpRequest)
	{
		this.req = new XMLHttpRequest();
		this.req.onreadystatechange = function () { pointer.processReqChange() };
		this.req.open("GET", url, true); //
		this.req.send(null);
	// branch for IE/Windows ActiveX version
	}
	else if (window.ActiveXObject)
	{
		this.req = new ActiveXObject("Microsoft.XMLHTTP");
		if (this.req)
		{
			this.req.onreadystatechange = function () { pointer.processReqChange() };
			this.req.open(meth, url, true);
			this.req.send();
		}
	}
}

_bsn.Ajax.prototype.processReqChange = function()
{
	
	// only if req shows "loaded"
	if (this.req.readyState == 4) {
		// only if "OK"
		if (this.req.status == 200)
		{
			this.onComplete( this.req );
		} else {
			this.onError( this.req.status );
		}
	}
}

// DOM PROTOTYPE _____________________________________________
if (typeof(_bsn.DOM) == "undefined")
	_bsn.DOM = {}

_bsn.DOM.createElement = function ( type, attr, cont, html )
{
	var ne = document.createElement( type );
	if (!ne)
		return false;
		
	for (var a in attr)
		ne[a] = attr[a];
		
	if (typeof(cont) == "string" && !html)
		ne.appendChild( document.createTextNode(cont) );
	else if (typeof(cont) == "string" && html)
		ne.innerHTML = cont;
	else if (typeof(cont) == "object")
		ne.appendChild( cont );

	return ne;
}

_bsn.DOM.clearElement = function ( id )
{
	var ele = this.getElement( id );
	
	if (!ele)
		return false;
	
	while (ele.childNodes.length)
		ele.removeChild( ele.childNodes[0] );
	
	return true;
}

_bsn.DOM.removeElement = function ( ele )
{
	var e = this.getElement(ele);
	
	if (!e)
		return false;
	else if (e.parentNode.removeChild(e))
		return true;
	else
		return false;
}

_bsn.DOM.replaceContent = function ( id, cont, html )
{
	var ele = this.getElement( id );
	
	if (!ele)
		return false;
	
	this.clearElement( ele );
	
	if (typeof(cont) == "string" && !html)
		ele.appendChild( document.createTextNode(cont) );
	else if (typeof(cont) == "string" && html)
		ele.innerHTML = cont;
	else if (typeof(cont) == "object")
		ele.appendChild( cont );
}

_bsn.DOM.getElement = function ( ele )
{
	if (typeof(ele) == "undefined")
	{
		return false;
	}
	else if (typeof(ele) == "string") {

	  var borrame = document.getElementsByName(ele);
		var re = document.getElementById( ele );
		if (!re)
			return false;
		else if (typeof(re.appendChild) != "undefined" ) {
			return re;
		} else {
			return false;
		}
	}
	else if (typeof(ele.appendChild) != "undefined")
		return ele;
	else
		return false;
}

_bsn.DOM.appendChildren = function ( id, arr )
{
	var ele = this.getElement( id );
	
	if (!ele)
		return false;
	
	
	if (typeof(arr) != "object")
		return false;
		
	for (var i=0;i<arr.length;i++)
	{
		var cont = arr[i];
		if (typeof(cont) == "string")
			ele.appendChild( document.createTextNode(cont) );
		else if (typeof(cont) == "object")
			ele.appendChild( cont );
	}
}

_bsn.DOM.getPos = function ( ele )
{
	var ele = this.getElement(ele);

	var obj = ele;

	var curleft = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curleft += obj.offsetLeft
			obj = obj.offsetParent;
		}
	}
	else if (obj.x)
		curleft += obj.x;


	var obj = ele;
	
	var curtop = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curtop += obj.offsetTop
			obj = obj.offsetParent;
		}
	}
	else if (obj.y)
		curtop += obj.y;

	return {x:curleft, y:curtop}
}


// FADER PROTOTYPE _____________________________________________
if (typeof(_bsn.Fader) == "undefined")
	_bsn.Fader = {}

_bsn.Fader = function (ele, from, to, fadetime, callback)
{	
	if (!ele)
		return false;
	
	this.ele = ele;
	
	this.from = from;
	this.to = to;
	
	this.callback = callback;
	
	this.nDur = fadetime;
		
	this.nInt = 50;
	this.nTime = 0;
	
	var p = this;
	this.nID = setInterval(function() { p._fade() }, this.nInt);
}

_bsn.Fader.prototype._fade = function()
{
	this.nTime += this.nInt;
	
	var ieop = Math.round( this._tween(this.nTime, this.from, this.to, this.nDur) * 100 );
	var op = ieop / 100;
	
	if (this.ele.filters) // internet explorer
	{
		try
		{
			this.ele.filters.item("DXImageTransform.Microsoft.Alpha").opacity = ieop;
		} catch (e) { 
			// If it is not set initially, the browser will throw an error.  This will set it if it is not set yet.
			this.ele.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity='+ieop+')';
		}
	}
	else // other browsers
	{
		this.ele.style.opacity = op;
	}
	
	
	if (this.nTime == this.nDur)
	{
		clearInterval( this.nID );
		if (this.callback != undefined)
			this.callback();
	}
}

_bsn.Fader.prototype._tween = function(t,b,c,d)
{
	return b + ( (c-b) * (t/d) );
}