/**

 *  author:		Timothy Groves - http://www.brandspankingnew.net

 *	version:	1.2 - 2006-11-17

 *              1.3 - 2006-12-04

 *              2.0 - 2007-02-07

 *

 */



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 = 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.timeout)									this.oP.timeout = 2500;

	if (!this.oP.delay)										this.oP.delay = 500;

	if (!this.oP.offsety)									this.oP.offsety = -5;

	if (!this.oP.shownoresults)								this.oP.shownoresults = true;

	if (!this.oP.noresults)									this.oP.noresults = "No results!";

	if (!this.oP.maxheight && this.oP.maxheight !== 0)		this.oP.maxheight = 250;

	if (!this.oP.cache && this.oP.cache != false)			this.oP.cache = true;

	

	

	

	

	

	// 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); }

	

	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:

			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++)

		{

			

			tempstr = this.aSuggestions[i].value.toLowerCase();

			if (tempstr.match(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.setSuggestions(req) };

	var onErrorFunc = function (status) { alert("AJAX error: "+status); };



	var myAjax = new _bsn.Ajax();

	myAjax.makeRequest( url, meth, onSuccessFunc, onErrorFunc );

}











_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 }  );

		}

	}

	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);

}































_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 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) );

}