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;

  this.sInput = "";
  this.nInputChars = 0;
  this.aSuggestions = [];
  this.iHighlighted = 0;
  this.bIsItemSelected = false;


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

  // defaults	
  //
  if (!this.oP.minchars) this.oP.minchars = 1;
  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.ajaxFunction) this.oP.ajaxFunction = "GetJobTagList";
  if (!this.oP.timeout) this.oP.timeout = 5000;
  if (!this.oP.delay) this.oP.delay = 500;
  if (!this.oP.offsety) this.oP.offsety = -5;
  if (!this.oP.shownoresults) this.oP.shownoresults = false;
  if (!this.oP.noresults) this.oP.noresults = "";
  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 mypointer = this;


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

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


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



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


// ====================================================================================

_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:
      if (this.bIsItemSelected == true)
        return true;

      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 ESC = 27;

  var bubble = true;

  switch (key) {


    case ARRUP:
      this.changeHighlight(key);
      bubble = false;
      break;


    case ARRDN:
      this.changeHighlight(key);
      bubble = false;
      break;

    case ESC:
      this.clearSuggestions();
      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].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 mypointer = this;
    clearTimeout(this.ajID);
    this.ajID = setTimeout(function() { mypointer.doAjaxRequest() }, this.oP.delay);
  }

  return false;
}


// ====================================================================================


_bsn.AutoSuggest.prototype.doAjaxRequest = function () {
    var mypointer = 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) { mypointer.setSuggestions(req) };
    var onErrorFunc = function (status) { alert("AJAX error: " + status); };
    var callbackData;
    if (this.oP.ajaxFunction.indexOf("GetRefineByKeywordJobTitleList") > 0) {
        callbackData = JSON.stringify({ length: 10, input: this.fld.value, searchUrl: location.href })
    }
    else {
        callbackData = JSON.stringify({ length: 10, input: this.fld.value })
    }
    $.ajax({
        type: "POST",
        url: this.oP.ajaxFunction,
        contentType: 'application/json',
        dataType: 'json',
        data: callbackData,
        success: function (data) { onSuccessFunc(data.d); }
    });
}

// ====================================================================================

_bsn.AutoSuggest.prototype.setSuggestions = function(req) {

  this.aSuggestions = [];

  var results = req;

  this.aSuggestions = results;

  this.idAs = "as_" + this.fld.id;

  this.createList(this.aSuggestions);

}

// =========================================================================
_bsn.AutoSuggest.prototype.createList = function(arr) {

  var mypointer = 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];

    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() { mypointer.setHighlightedValue(); return false; }
    a.onmouseover = function() { mypointer.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);
    this.bIsItemSelected = true;
    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 mypointer 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() { mypointer.killTimeout() }
  div.onmouseout = function() { mypointer.resetTimeout() }


  // add DIV to document
  //

  if (arr.length != 0) {
    document.getElementsByTagName("body")[0].appendChild(div);
  }




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






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

// =========================================================================

_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.bIsItemSelected = false;
  
  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;
  }
}

// =========================================================================

function getInternetExplorerVersion()
// Returns the version of Internet Explorer or a -1
// (indicating the use of another browser).
{
  var rv = -1; // Return value assumes failure.
  if (navigator.appName == 'Microsoft Internet Explorer') {
    var ua = navigator.userAgent;
    var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat(RegExp.$1);
  }
  return rv;
}

_bsn.AutoSuggest.prototype.setHighlightedValue = function() {
  if (this.iHighlighted) {
    this.sInput = this.fld.value = this.aSuggestions[this.iHighlighted - 1];

    var vers = getInternetExplorerVersion();

    // move cursor to end of input (safari)
    //
    if (vers >= 7 || vers == -1)
      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 mypointer = this;
  this.toID = setTimeout(function() { mypointer.clearSuggestions() }, 1000);
}

// =========================================================================
_bsn.AutoSuggest.prototype.clearSuggestions = function() {

  this.bIsItemSelected = true;

  this.killTimeout();

  var ele = _bsn.DOM.getElement(this.idAs);
  var mypointer = this;
  if (ele) {
    var fade = new _bsn.Fader(ele, 1, 0, 250, function() { _bsn.DOM.removeElement(mypointer.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 mypointer = this;

  // branch for native XMLHttpRequest object
  if (window.XMLHttpRequest) {
    this.req = new XMLHttpRequest();
    this.req.onreadystatechange = function() { mypointer.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() { mypointer.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 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));
}