 /****************************************************************
  *                                                              *
  *  JQuery Curvy Corners by Mike Jolley                         *
  *	 http://blue-anvil.com                                       *
  *  ------------                                                *
  *  Version 1.81                                                 *
  *                                                              *
  *  Origionaly by: Cameron Cooke and Tim Hutchison.             *
  *  Website: http://www.curvycorners.net                        *
  *                                                              *
  *  This library is free software; you can redistribute         *
  *  it and/or modify it under the terms of the GNU              *
  *  Lesser General Public License as published by the           *
  *  Free Software Foundation; either version 2.1 of the         *
  *  License, or (at your option) any later version.             *
  *                                                              *
  *  This library is distributed in the hope that it will        *
  *  be useful, but WITHOUT ANY WARRANTY; without even the       *
  *  implied warranty of MERCHANTABILITY or FITNESS FOR A        *
  *  PARTICULAR PURPOSE. See the GNU Lesser General Public       *
  *  License for more details.                                   *
  *                                                              *
  *  You should have received a copy of the GNU Lesser           *
  *  General Public License along with this library;             *
  *  Inc., 59 Temple Place, Suite 330, Boston,                   *
  *  MA 02111-1307 USA                                           *
  *                                                              *
  ****************************************************************/
/*
(function($){$.fn.corner=function(options){function BlendColour(Col1,Col2,Col1Fraction){var red1=parseInt(Col1.substr(1,2),16);var green1=parseInt(Col1.substr(3,2),16);var blue1=parseInt(Col1.substr(5,2),16);var red2=parseInt(Col2.substr(1,2),16);var green2=parseInt(Col2.substr(3,2),16);var blue2=parseInt(Col2.substr(5,2),16);if(Col1Fraction>1||Col1Fraction<0)Col1Fraction=1;var endRed=Math.round((red1*Col1Fraction)+(red2*(1-Col1Fraction)));if(endRed>255)endRed=255;if(endRed<0)endRed=0;var endGreen=Math.round((green1*Col1Fraction)+(green2*(1-Col1Fraction)));if(endGreen>255)endGreen=255;if(endGreen<0)endGreen=0;var endBlue=Math.round((blue1*Col1Fraction)+(blue2*(1-Col1Fraction)));if(endBlue>255)endBlue=255;if(endBlue<0)endBlue=0;return"#"+IntToHex(endRed)+IntToHex(endGreen)+IntToHex(endBlue);}
function IntToHex(strNum){base=strNum/16;rem=strNum%16;base=base-(rem/16);baseS=MakeHex(base);remS=MakeHex(rem);return baseS+''+remS;}
function MakeHex(x){if((x>=0)&&(x<=9)){return x;}else{switch(x){case 10:return"A";case 11:return"B";case 12:return"C";case 13:return"D";case 14:return"E";case 15:return"F";};return"F";};}
function pixelFraction(x,y,r){var pixelfraction=0;var xvalues=new Array(1);var yvalues=new Array(1);var point=0;var whatsides="";var intersect=Math.sqrt((Math.pow(r,2)-Math.pow(x,2)));if((intersect>=y)&&(intersect<(y+1))){whatsides="Left";xvalues[point]=0;yvalues[point]=intersect-y;point=point+1;};var intersect=Math.sqrt((Math.pow(r,2)-Math.pow(y+1,2)));if((intersect>=x)&&(intersect<(x+1))){whatsides=whatsides+"Top";xvalues[point]=intersect-x;yvalues[point]=1;point=point+1;};var intersect=Math.sqrt((Math.pow(r,2)-Math.pow(x+1,2)));if((intersect>=y)&&(intersect<(y+1))){whatsides=whatsides+"Right";xvalues[point]=1;yvalues[point]=intersect-y;point=point+1;};var intersect=Math.sqrt((Math.pow(r,2)-Math.pow(y,2)));if((intersect>=x)&&(intersect<(x+1))){whatsides=whatsides+"Bottom";xvalues[point]=intersect-x;yvalues[point]=0;};switch(whatsides){case"LeftRight":pixelfraction=Math.min(yvalues[0],yvalues[1])+((Math.max(yvalues[0],yvalues[1])-Math.min(yvalues[0],yvalues[1]))/2);break;case"TopRight":pixelfraction=1-(((1-xvalues[0])*(1-yvalues[1]))/2);break;case"TopBottom":pixelfraction=Math.min(xvalues[0],xvalues[1])+((Math.max(xvalues[0],xvalues[1])-Math.min(xvalues[0],xvalues[1]))/2);break;case"LeftBottom":pixelfraction=(yvalues[0]*xvalues[1])/2;break;default:pixelfraction=1;};return pixelfraction;}
function rgb2Hex(rgbColour){try{var rgbArray=rgb2Array(rgbColour);var red=parseInt(rgbArray[0]);var green=parseInt(rgbArray[1]);var blue=parseInt(rgbArray[2]);var hexColour="#"+IntToHex(red)+IntToHex(green)+IntToHex(blue);}catch(e){alert("There was an error converting the RGB value to Hexadecimal in function rgb2Hex");};return hexColour;}
function rgb2Array(rgbColour){var rgbValues=rgbColour.substring(4,rgbColour.indexOf(")"));var rgbArray=rgbValues.split(", ");return rgbArray;}
function format_colour(colour){var returnColour="transparent";if(colour!=""&&colour!="transparent")
{if(colour.substr(0,3)=="rgb")
{returnColour=rgb2Hex(colour);}
else if(colour.length==4)
{returnColour="#"+colour.substring(1,2)+colour.substring(1,2)+colour.substring(2,3)+colour.substring(2,3)+colour.substring(3,4)+colour.substring(3,4);}
else
{returnColour=colour;};};return returnColour;};function strip_px(value){return parseInt(((value!="auto"&&value.indexOf("%")==-1&&value!=""&&value.indexOf("px")!==-1)?value.slice(0,value.indexOf("px")):0))}
function drawPixel(box,intx,inty,colour,transAmount,height,newCorner,image,bgImage,cornerRadius,isBorder,borderWidth,boxWidth,settings){var $$=$(box);var pixel=document.createElement("div");$(pixel).css({height:height,width:"1px",position:"absolute","font-size":"1px",overflow:"hidden"});var topMaxRadius=Math.max(settings.tl?settings.tl.radius:0,settings.tr?settings.tr.radius:0);if(image==-1&&bgImage!=""){if(topMaxRadius>0)
$(pixel).css("background-position","-"+((boxWidth-cornerRadius-borderWidth)+intx)+"px -"+(($$.height()+topMaxRadius-borderWidth)-inty)+"px");else
$(pixel).css("background-position","-"+((boxWidth-cornerRadius-borderWidth)+intx)+"px -"+(($$.height())-inty)+"px");$(pixel).css({"background-image":bgImage,"background-repeat":$$.css("background-repeat"),"background-color":colour});}
else
{if(!isBorder)$(pixel).css("background-color",colour).addClass('hasBackgroundColor');else $(pixel).css("background-color",colour);};if(transAmount!=100)
setOpacity(pixel,transAmount);$(pixel).css({top:inty+"px",left:intx+"px"});return pixel;};function setOpacity(obj,opacity){opacity=(opacity==100)?99.999:opacity;if($.browser.safari&&obj.tagName!="IFRAME")
{var rgbArray=rgb2Array(obj.style.backgroundColor);var red=parseInt(rgbArray[0]);var green=parseInt(rgbArray[1]);var blue=parseInt(rgbArray[2]);obj.style.backgroundColor="rgba("+red+", "+green+", "+blue+", "+opacity/100+")";}
else if(typeof(obj.style.opacity)!="undefined")
{obj.style.opacity=opacity/100;}
else if(typeof(obj.style.MozOpacity)!="undefined")
{obj.style.MozOpacity=opacity/100;}
else if(typeof(obj.style.filter)!="undefined")
{obj.style.filter="alpha(opacity:"+opacity+")";}
else if(typeof(obj.style.KHTMLOpacity)!="undefined")
{obj.style.KHTMLOpacity=opacity/100;}}
function applyCorners(box,settings){var $$=$(box);var thebgImage=$$.css("backgroundImage");var topContainer=null;var bottomContainer=null;var masterCorners=new Array();var contentDIV=null;var boxHeight=strip_px($$.css("height"))?strip_px($$.css("height")):box.scrollHeight;var boxWidth=strip_px($$.css("width"))?strip_px($$.css("width")):box.scrollWidth;var borderWidth=strip_px($$.css("borderTopWidth"))?strip_px($$.css("borderTopWidth")):0;var boxPaddingTop=strip_px($$.css("paddingTop"));var boxPaddingBottom=strip_px($$.css("paddingBottom"));var boxPaddingLeft=strip_px($$.css("paddingLeft"));var boxPaddingRight=strip_px($$.css("paddingRight"));var boxColour=format_colour($$.css("backgroundColor"));var bgImage=(thebgImage!="none"&&thebgImage!="initial")?thebgImage:"";var borderColour=format_colour($$.css("borderTopColor"));var borderString=borderWidth+"px"+" solid "+borderColour;var topMaxRadius=Math.max(settings.tl?settings.tl.radius:0,settings.tr?settings.tr.radius:0);var botMaxRadius=Math.max(settings.bl?settings.bl.radius:0,settings.br?settings.br.radius:0);$$.addClass('hasCorners').css({"padding":"0","borderColor":box.style.borderColour,'overflow':'visible'});if(box.style.position!="absolute")$$.css("position","relative");if(($.browser.msie)){if($.browser.version==6&&box.style.width=="auto"&&box.style.height=="auto")$$.css("width","100%");$$.css("zoom","1");$($$+" *").css("zoom","normal");}
for(var t=0;t<2;t++){switch(t){case 0:if(settings.tl||settings.tr){var newMainContainer=document.createElement("div");topContainer=box.appendChild(newMainContainer);$(topContainer).css({width:"100%","font-size":"1px",overflow:"hidden",position:"absolute","padding-left":borderWidth,"padding-right":borderWidth,height:topMaxRadius+"px",top:0-topMaxRadius+"px",left:0-borderWidth+"px"}).addClass('topContainer');};break;case 1:if(settings.bl||settings.br){var newMainContainer=document.createElement("div");bottomContainer=box.appendChild(newMainContainer);$(bottomContainer).css({width:"100%","font-size":"1px",overflow:"hidden",position:"absolute","padding-left":borderWidth,"padding-right":borderWidth,height:botMaxRadius,bottom:0-botMaxRadius+"px",left:0-borderWidth+"px"}).addClass('bottomContainer');};break;};};if(settings.autoPad==true){var contentContainer=document.createElement("div");var contentContainer2=document.createElement("div");var clearDiv=document.createElement("div");$(contentContainer2).css({margin:"0","padding-bottom":boxPaddingBottom,"padding-top":boxPaddingTop,"padding-left":boxPaddingLeft,"padding-right":boxPaddingRight,'overflow':'visible'}).addClass('hasBackgroundColor content_container');$(contentContainer).css({position:"relative",'float':"left",width:"100%","margin-top":"-"+(topMaxRadius-borderWidth)+"px","margin-bottom":"-"+(botMaxRadius-borderWidth)+"px"}).addClass="autoPadDiv";$(clearDiv).css("clear","both");contentContainer2.appendChild(contentContainer);contentContainer2.appendChild(clearDiv);$$.wrapInner(contentContainer2);};if(topContainer)$$.css("border-top",0);if(bottomContainer)$$.css("border-bottom",0);var corners=["tr","tl","br","bl"];for(var i in corners){if(i>-1<4){var cc=corners[i];if(!settings[cc]){if(((cc=="tr"||cc=="tl")&&topContainer!=null)||((cc=="br"||cc=="bl")&&bottomContainer!=null)){var newCorner=document.createElement("div");$(newCorner).css({position:"relative","font-size":"1px",overflow:"hidden"});if(bgImage=="")
$(newCorner).css("background-color",boxColour);else
$(newCorner).css("background-image",bgImage).css("background-color",boxColour);;switch(cc)
{case"tl":$(newCorner).css({height:topMaxRadius-borderWidth,"margin-right":settings.tr.radius-(borderWidth*2),"border-left":borderString,"border-top":borderString,left:-borderWidth+"px","background-repeat":$$.css("background-repeat"),"background-position":borderWidth+"px 0px"});break;case"tr":$(newCorner).css({height:topMaxRadius-borderWidth,"margin-left":settings.tl.radius-(borderWidth*2),"border-right":borderString,"border-top":borderString,left:borderWidth+"px","background-repeat":$$.css("background-repeat"),"background-position":"-"+(topMaxRadius+borderWidth)+"px 0px"});break;case"bl":if(topMaxRadius>0)
$(newCorner).css({height:botMaxRadius-borderWidth,"margin-right":settings.br.radius-(borderWidth*2),"border-left":borderString,"border-bottom":borderString,left:-borderWidth+"px","background-repeat":$$.css("background-repeat"),"background-position":"0px -"+($$.height()+topMaxRadius-borderWidth+1)+"px"});else
$(newCorner).css({height:botMaxRadius-borderWidth,"margin-right":settings.br.radius-(borderWidth*2),"border-left":borderString,"border-bottom":borderString,left:-borderWidth+"px","background-repeat":$$.css("background-repeat"),"background-position":"0px -"+($$.height())+"px"});break;case"br":if(topMaxRadius>0)
$(newCorner).css({height:botMaxRadius-borderWidth,"margin-left":settings.bl.radius-(borderWidth*2),"border-right":borderString,"border-bottom":borderString,left:borderWidth+"px","background-repeat":$$.css("background-repeat"),"background-position":"-"+settings.bl.radius+borderWidth+"px -"+($$.height()+topMaxRadius-borderWidth+1)+"px"});else
$(newCorner).css({height:botMaxRadius-borderWidth,"margin-left":settings.bl.radius-(borderWidth*2),"border-right":borderString,"border-bottom":borderString,left:borderWidth+"px","background-repeat":$$.css("background-repeat"),"background-position":"-"+settings.bl.radius+borderWidth+"px -"+($$.height())+"px"});break;};};}else{if(masterCorners[settings[cc].radius]){var newCorner=masterCorners[settings[cc].radius].cloneNode(true);}else{var newCorner=document.createElement("DIV");$(newCorner).css({height:settings[cc].radius,width:settings[cc].radius,position:"absolute","font-size":"1px",overflow:"hidden"});var borderRadius=parseInt(settings[cc].radius-borderWidth);for(var intx=0,j=settings[cc].radius;intx<j;intx++){if((intx+1)>=borderRadius)
var y1=-1;else
var y1=(Math.floor(Math.sqrt(Math.pow(borderRadius,2)-Math.pow((intx+1),2)))-1);if(borderRadius!=j){if((intx)>=borderRadius)
var y2=-1;else
var y2=Math.ceil(Math.sqrt(Math.pow(borderRadius,2)-Math.pow(intx,2)));if((intx+1)>=j)
var y3=-1;else
var y3=(Math.floor(Math.sqrt(Math.pow(j,2)-Math.pow((intx+1),2)))-1);};if((intx)>=j)
var y4=-1;else
var y4=Math.ceil(Math.sqrt(Math.pow(j,2)-Math.pow(intx,2)));if(y1>-1)newCorner.appendChild(drawPixel(box,intx,0,boxColour,100,(y1+1),newCorner,-1,bgImage,settings[cc].radius,0,borderWidth,boxWidth,settings));if(borderRadius!=j){for(var inty=(y1+1);inty<y2;inty++){if(settings.antiAlias){if(bgImage!=""){var borderFract=(pixelFraction(intx,inty,borderRadius)*100);if(borderFract<30){newCorner.appendChild(drawPixel(box,intx,inty,borderColour,100,1,newCorner,0,bgImage,settings[cc].radius,1,borderWidth,boxWidth,settings));}else{newCorner.appendChild(drawPixel(box,intx,inty,borderColour,100,1,newCorner,-1,bgImage,settings[cc].radius,1,borderWidth,boxWidth,settings));};}else{var pixelcolour=BlendColour(boxColour,borderColour,pixelFraction(intx,inty,borderRadius));newCorner.appendChild(drawPixel(box,intx,inty,pixelcolour,100,1,newCorner,0,bgImage,settings[cc].radius,cc,1,borderWidth,boxWidth,settings));};};};if(settings.antiAlias){if(y3>=y2)
{if(y2==-1)y2=0;newCorner.appendChild(drawPixel(box,intx,y2,borderColour,100,(y3-y2+1),newCorner,0,bgImage,0,1,borderWidth,boxWidth,settings));}}else{if(y3>=y1)
{newCorner.appendChild(drawPixel(box,intx,(y1+1),borderColour,100,(y3-y1),newCorner,0,bgImage,0,1,borderWidth,boxWidth,settings));}};var outsideColour=borderColour;}else{var outsideColour=boxColour;var y3=y1;};if(settings.antiAlias){for(var inty=(y3+1);inty<y4;inty++){newCorner.appendChild(drawPixel(box,intx,inty,outsideColour,(pixelFraction(intx,inty,j)*100),1,newCorner,((borderWidth>0)?0:-1),bgImage,settings[cc].radius,1,borderWidth,boxWidth,settings));};};};masterCorners[settings[cc].radius]=newCorner.cloneNode(true);};if(cc!="br"){for(var t=0,k=newCorner.childNodes.length;t<k;t++){var pixelBar=newCorner.childNodes[t];var pixelBarTop=strip_px($(pixelBar).css("top"));var pixelBarLeft=strip_px($(pixelBar).css("left"));var pixelBarHeight=strip_px($(pixelBar).css("height"));if(cc=="tl"||cc=="bl"){$(pixelBar).css("left",settings[cc].radius-pixelBarLeft-1+"px");};if(cc=="tr"||cc=="tl"){$(pixelBar).css("top",settings[cc].radius-pixelBarHeight-pixelBarTop+"px");};switch(cc){case"tr":$(pixelBar).css("background-position","-"+Math.abs((boxWidth-settings[cc].radius+borderWidth)+pixelBarLeft)+"px -"+Math.abs(settings[cc].radius-pixelBarHeight-pixelBarTop-borderWidth)+"px");break;case"tl":$(pixelBar).css("background-position","-"+Math.abs((settings[cc].radius-pixelBarLeft-1)-borderWidth)+"px -"+Math.abs(settings[cc].radius-pixelBarHeight-pixelBarTop-borderWidth)+"px");break;case"bl":if(topMaxRadius>0)
$(pixelBar).css("background-position","-"+Math.abs((settings[cc].radius-pixelBarLeft-1)-borderWidth)+"px -"+Math.abs(($$.height()+topMaxRadius-borderWidth+1))+"px");else
$(pixelBar).css("background-position","-"+Math.abs((settings[cc].radius-pixelBarLeft-1)-borderWidth)+"px -"+Math.abs(($$.height()))+"px");break;};};};};if(newCorner){switch(cc){case"tl":if($(newCorner).css("position")=="absolute")$(newCorner).css("top","0");if($(newCorner).css("position")=="absolute")$(newCorner).css("left","0");if(topContainer)topContainer.appendChild(newCorner);break;case"tr":if($(newCorner).css("position")=="absolute")$(newCorner).css("top","0");if($(newCorner).css("position")=="absolute")$(newCorner).css("right","0");if(topContainer)topContainer.appendChild(newCorner);break;case"bl":if($(newCorner).css("position")=="absolute")$(newCorner).css("bottom","0");if(newCorner.style.position=="absolute")$(newCorner).css("left","0");if(bottomContainer)bottomContainer.appendChild(newCorner);break;case"br":if($(newCorner).css("position")=="absolute")$(newCorner).css("bottom","0");if($(newCorner).css("position")=="absolute")$(newCorner).css("right","0");if(bottomContainer)bottomContainer.appendChild(newCorner);break;};};};};var radiusDiff=new Array();radiusDiff["t"]=Math.abs(settings.tl.radius-settings.tr.radius);radiusDiff["b"]=Math.abs(settings.bl.radius-settings.br.radius);for(z in radiusDiff){if(z=="t"||z=="b"){if(radiusDiff[z]){var smallerCornerType=((settings[z+"l"].radius<settings[z+"r"].radius)?z+"l":z+"r");var newFiller=document.createElement("div");$(newFiller).css({height:radiusDiff[z],width:settings[smallerCornerType].radius+"px",position:"absolute","font-size":"1px",overflow:"hidden","background-color":boxColour,"background-image":bgImage});switch(smallerCornerType)
{case"tl":$(newFiller).css({"bottom":"0","left":"0","border-left":borderString,"background-position":"0px -"+(settings[smallerCornerType].radius-borderWidth)});topContainer.appendChild(newFiller);break;case"tr":$(newFiller).css({"bottom":"0","right":"0","border-right":borderString,"background-position":"0px -"+(settings[smallerCornerType].radius-borderWidth)+"px"});topContainer.appendChild(newFiller);break;case"bl":$(newFiller).css({"top":"0","left":"0","border-left":borderString,"background-position":"0px -"+($$.height()+settings[smallerCornerType].radius-borderWidth)});bottomContainer.appendChild(newFiller);break;case"br":$(newFiller).css({"top":"0","right":"0","border-right":borderString,"background-position":"0px -"+($$.height()+settings[smallerCornerType].radius-borderWidth)});bottomContainer.appendChild(newFiller);break;}};var newFillerBar=document.createElement("div");$(newFillerBar).css({position:"relative","font-size":"1px",overflow:"hidden","background-color":boxColour,"background-image":bgImage,"background-repeat":$$.css("background-repeat")});switch(z){case"t":if(topContainer){if(settings.tl.radius&&settings.tr.radius){$(newFillerBar).css({height:topMaxRadius-borderWidth+"px","margin-left":settings.tl.radius-borderWidth+"px","margin-right":settings.tr.radius-borderWidth+"px","border-top":borderString}).addClass('hasBackgroundColor');if(bgImage!="")
$(newFillerBar).css("background-position","-"+(topMaxRadius+borderWidth)+"px 0px");topContainer.appendChild(newFillerBar);};$$.css("background-position","0px -"+(topMaxRadius-borderWidth+1)+"px");};break;case"b":if(bottomContainer){if(settings.bl.radius&&settings.br.radius){$(newFillerBar).css({height:botMaxRadius-borderWidth+"px","margin-left":settings.bl.radius-borderWidth+"px","margin-right":settings.br.radius-borderWidth+"px","border-bottom":borderString});if(bgImage!=""&&topMaxRadius>0)
$(newFillerBar).css("background-position","-"+(settings.bl.radius-borderWidth)+"px -"+($$.height()+topMaxRadius-borderWidth+1)+"px");else
$(newFillerBar).css("background-position","-"+(settings.bl.radius-borderWidth)+"px -"+($$.height())+"px").addClass('hasBackgroundColor');bottomContainer.appendChild(newFillerBar);};};break;};};};$$.prepend(topContainer);$$.prepend(bottomContainer);}
var settings={tl:{radius:8},tr:{radius:8},bl:{radius:8},br:{radius:8},antiAlias:true,autoPad:true,validTags:["div"]};if(options&&typeof(options)!='string')
$.extend(settings,options);return this.each(function(){if(!$(this).is('.hasCorners')){applyCorners(this,settings);}});};})(jQuery);
*/
/*
 * Treeview 1.4 - jQuery plugin to hide and show branches of a tree
 * 
 * http://bassistance.de/jquery-plugins/jquery-plugin-treeview/
 * http://docs.jquery.com/Plugins/Treeview
 *
 * Copyright (c) 2007 Jörn Zaefferer
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
 * Revision: $Id: jquery.treeview.js 4684 2008-02-07 19:08:06Z joern.zaefferer $
 *
 */

;(function($) {

	$.extend($.fn, {
		swapClass: function(c1, c2) {
			var c1Elements = this.filter('.' + c1);
			this.filter('.' + c2).removeClass(c2).addClass(c1);
			c1Elements.removeClass(c1).addClass(c2);
			return this;
		},
		replaceClass: function(c1, c2) {
			return this.filter('.' + c1).removeClass(c1).addClass(c2).end();
		},
		hoverClass: function(className) {
			className = className || "hover";
			return this.hover(function() {
				$(this).addClass(className);
			}, function() {
				$(this).removeClass(className);
			});
		},
		heightToggle: function(animated, callback) {
			animated ?
				this.animate({ height: "toggle" }, animated, callback) :
				this.each(function(){
					jQuery(this)[ jQuery(this).is(":hidden") ? "show" : "hide" ]();
					if(callback)
						callback.apply(this, arguments);
				});
		},
		heightHide: function(animated, callback) {
			if (animated) {
				this.animate({ height: "hide" }, animated, callback);
			} else {
				this.hide();
				if (callback)
					this.each(callback);				
			}
		},
		prepareBranches: function(settings) {
			if (!settings.prerendered) {
				// mark last tree items
				this.filter(":last-child:not(ul)").addClass(CLASSES.last);
				// collapse whole tree, or only those marked as closed, anyway except those marked as open
				this.filter((settings.collapsed ? "" : "." + CLASSES.closed) + ":not(." + CLASSES.open + ")").find(">ul").hide();
			}
			// return all items with sublists
			return this.filter(":has(>ul)");
		},
		applyClasses: function(settings, toggler) {
			this.filter(":has(>ul):not(:has(>a))").find(">span").click(function(event) {
				toggler.apply($(this).next());
			}).add( $("a", this) ).hoverClass();
			
			if (!settings.prerendered) {
				// handle closed ones first
				this.filter(":has(>ul:hidden)")
						.addClass(CLASSES.expandable)
						.replaceClass(CLASSES.last, CLASSES.lastExpandable);
						
				// handle open ones
				this.not(":has(>ul:hidden)")
						.addClass(CLASSES.collapsable)
						.replaceClass(CLASSES.last, CLASSES.lastCollapsable);
						
	            // create hitarea
				this.prepend("<div class=\"" + CLASSES.hitarea + "\"/>").find("div." + CLASSES.hitarea).each(function() {
					var classes = "";
					$.each($(this).parent().attr("class").split(" "), function() {
						classes += this + "-hitarea ";
					});
					$(this).addClass( classes );
				});
			}
			
			// apply event to hitarea
			this.find("div." + CLASSES.hitarea).click( toggler );
		},
		treeview: function(settings) {
			
			settings = $.extend({
				cookieId: "treeview"
			}, settings);
			
			if (settings.add) {
				return this.trigger("add", [settings.add]);
			}
			
			if ( settings.toggle ) {
				var callback = settings.toggle;
				settings.toggle = function() {
					return callback.apply($(this).parent()[0], arguments);
				};
			}
			if ( settings.finish ) {
				var callback = settings.finish;
				settings.finish = function() {
					return callback.apply($(this).parent()[0], arguments);
				};
			}		
			// factory for treecontroller
			function treeController(tree, control) {
				// factory for click handlers
				function handler(filter) {
					return function() {
						// reuse toggle event handler, applying the elements to toggle
						// start searching for all hitareas
						toggler.apply( $("div." + CLASSES.hitarea, tree).filter(function() {
							// for plain toggle, no filter is provided, otherwise we need to check the parent element
							return filter ? $(this).parent("." + filter).length : true;
						}) );
						return false;
					};
				}
				// click on first element to collapse tree
				$("a:eq(0)", control).click( handler(CLASSES.collapsable) );
				// click on second to expand tree
				$("a:eq(1)", control).click( handler(CLASSES.expandable) );
				// click on third to toggle tree
				$("a:eq(2)", control).click( handler() ); 
			}
		
			// handle toggle event
			function toggler() {
				$(this)
					.parent()
					// swap classes for hitarea
					.find(">.hitarea")
						.swapClass( CLASSES.collapsableHitarea, CLASSES.expandableHitarea )
						.swapClass( CLASSES.lastCollapsableHitarea, CLASSES.lastExpandableHitarea )
					.end()
					// swap classes for parent li
					.swapClass( CLASSES.collapsable, CLASSES.expandable )
					.swapClass( CLASSES.lastCollapsable, CLASSES.lastExpandable )
					// find child lists
					.find( ">ul" )
					// toggle them
					.heightToggle( settings.animated, settings.toggle );
				if ( settings.unique ) {
					$(this).parent()
						.siblings()
						// swap classes for hitarea
						.find(">.hitarea")
							.replaceClass( CLASSES.collapsableHitarea, CLASSES.expandableHitarea )
							.replaceClass( CLASSES.lastCollapsableHitarea, CLASSES.lastExpandableHitarea )
						.end()
						.replaceClass( CLASSES.collapsable, CLASSES.expandable )
						.replaceClass( CLASSES.lastCollapsable, CLASSES.lastExpandable )
						.find( ">ul" )
						.heightHide( settings.animated, settings.toggle );
				}
			}
			
			function serialize() {
				function binary(arg) {
					return arg ? 1 : 0;
				}
				var data = [];
				branches.each(function(i, e) {
					data[i] = $(e).is(":has(>ul:visible)") ? 1 : 0;
				});
				$.cookie(settings.cookieId, data.join("") );
			}
			
			function deserialize() {
				var stored = $.cookie(settings.cookieId);
				if ( stored ) {
					var data = stored.split("");
					branches.each(function(i, e) {
						$(e).find(">ul")[ parseInt(data[i]) ? "show" : "hide" ]();
					});
				}
			}
			
			// add treeview class to activate styles
			this.addClass("treeview");
			
			// prepare branches and find all tree items with child lists
			var branches = this.find("li").prepareBranches(settings);
			
			switch(settings.persist) {
			case "cookie":
				var toggleCallback = settings.toggle;
				settings.toggle = function() {
					serialize();
					if (toggleCallback) {
						toggleCallback.apply(this, arguments);
					}
				};
				deserialize();
				break;
			case "location":
				var current = this.find("a").filter(function() { return this.href.toLowerCase() == location.href.toLowerCase(); });
				if ( current.length ) {
					current.addClass("selected").parents("ul, li").add( current.next() ).show();
				}
				break;
			}
			
			branches.applyClasses(settings, toggler);
				
			// if control option is set, create the treecontroller and show it
			if ( settings.control ) {
				treeController(this, settings.control);
				$(settings.control).show();
			}
			
			return this.bind("add", function(event, branches) {
				$(branches).prev()
					.removeClass(CLASSES.last)
					.removeClass(CLASSES.lastCollapsable)
					.removeClass(CLASSES.lastExpandable)
				.find(">.hitarea")
					.removeClass(CLASSES.lastCollapsableHitarea)
					.removeClass(CLASSES.lastExpandableHitarea);
				$(branches).find("li").andSelf().prepareBranches(settings).applyClasses(settings, toggler);
			});
		}
	});
	
	// classes used by the plugin
	// need to be styled via external stylesheet, see first example
	var CLASSES = $.fn.treeview.classes = {
		open: "open",
		closed: "closed",
		expandable: "expandable",
		expandableHitarea: "expandable-hitarea",
		lastExpandableHitarea: "lastExpandable-hitarea",
		collapsable: "collapsable",
		collapsableHitarea: "collapsable-hitarea",
		lastCollapsableHitarea: "lastCollapsable-hitarea",
		lastCollapsable: "lastCollapsable",
		lastExpandable: "lastExpandable",
		last: "last",
		hitarea: "hitarea"
	};
	
	// provide backwards compability
	$.fn.Treeview = $.fn.treeview;
	
})(jQuery);