/*
 * Thickbox 3 - One Box To Rule Them All.
 * By Cody Lindley (http://www.codylindley.com)
 * Copyright (c) 2007 cody lindley
 * Licensed under the MIT License: http://www.opensource.org/licenses/mit-license.php
*/
		  
var tb_pathToImage = "/images/loadingAnimation.gif";

/*!!!!!!!!!!!!!!!!! edit below this line at your own risk !!!!!!!!!!!!!!!!!!!!!!!*/
/*
//on page load call tb_init
$(document).ready(function(){   
	tb_init('a.thickbox, area.thickbox, input.thickbox');//pass where to apply thickbox
	imgLoader = new Image();// preload image
	imgLoader.src = tb_pathToImage;
});

//add thickbox to href & area elements that have a class of .thickbox
function tb_init(domChunk){
	$(domChunk).click(function(){
	var t = this.title || this.name || null;
	var a = this.href || this.alt;
	var g = this.rel || false;
	tb_show(t,a,g);
	this.blur();
	return false;
	});
}

function tb_show(caption, url, imageGroup) {//function called when the user clicks on a thickbox link

	try {
		if (typeof document.body.style.maxHeight === "undefined") {//if IE 6
			$("body","html").css({height: "100%", width: "100%"});
			$("html").css("overflow","hidden");
			if (document.getElementById("TB_HideSelect") === null) {//iframe to hide select elements in ie6
				$("body").append("<iframe id='TB_HideSelect'></iframe><div id='TB_overlay'></div><div id='TB_window'></div>");
				$("#TB_overlay").click(tb_remove);
			}
		}else{//all others
			if(document.getElementById("TB_overlay") === null){
				$("body").append("<div id='TB_overlay'></div><div id='TB_window'>");
				$("#TB_overlay").click(tb_remove);
			}
		}
		
		if(caption===null){caption="";}
		$("body").append("<div id='TB_load'><img src='"+imgLoader.src+"' /></div>");//add loader to the page
		$('#TB_load').show();//show loader
		
		var baseURL;
	   if(url.indexOf("?")!==-1){ //ff there is a query string involved
			baseURL = url.substr(0, url.indexOf("?"));
	   }else{ 
	   		baseURL = url;
	   }
	   
	   var urlString = /\.jpg|\.jpeg|\.png|\.gif|\.bmp/g;
	   var urlType = baseURL.toLowerCase().match(urlString);

		if(urlType == '.jpg' || urlType == '.jpeg' || urlType == '.png' || urlType == '.gif' || urlType == '.bmp'){//code to show images
				
			TB_PrevCaption = "";
			TB_PrevURL = "";
			TB_PrevHTML = "";
			TB_NextCaption = "";
			TB_NextURL = "";
			TB_NextHTML = "";
			TB_imageCount = "";
			TB_FoundURL = false;
			if(imageGroup){
				TB_TempArray = $("a[@rel="+imageGroup+"]").get();
				for (TB_Counter = 0; ((TB_Counter < TB_TempArray.length) && (TB_NextHTML === "")); TB_Counter++) {
					var urlTypeTemp = TB_TempArray[TB_Counter].href.toLowerCase().match(urlString);
						if (!(TB_TempArray[TB_Counter].href == url)) {						
							if (TB_FoundURL) {
								TB_NextCaption = TB_TempArray[TB_Counter].title;
								TB_NextURL = TB_TempArray[TB_Counter].href;
								TB_NextHTML = "<span id='TB_next'>&nbsp;&nbsp;<a href='#'>Další &gt;</a></span>";
							} else {
								TB_PrevCaption = TB_TempArray[TB_Counter].title;
								TB_PrevURL = TB_TempArray[TB_Counter].href;
								TB_PrevHTML = "<span id='TB_prev'>&nbsp;&nbsp;<a href='#'>&lt; Předchozí</a></span>";
							}
						} else {
							TB_FoundURL = true;
							TB_imageCount = "Obrázek " + (TB_Counter + 1) +" z "+ (TB_TempArray.length);											
						}
				}
			}

			imgPreloader = new Image();
			imgPreloader.onload = function(){		
			imgPreloader.onload = null;
				
			// Resizing large images - orginal by Christian Montoya edited by me.
			var pagesize = tb_getPageSize();
			var x = pagesize[0] - 150;
			var y = pagesize[1] - 150;
			var imageWidth = imgPreloader.width;
			var imageHeight = imgPreloader.height;
			if (imageWidth > x) {
				imageHeight = imageHeight * (x / imageWidth); 
				imageWidth = x; 
				if (imageHeight > y) { 
					imageWidth = imageWidth * (y / imageHeight); 
					imageHeight = y; 
				}
			} else if (imageHeight > y) { 
				imageWidth = imageWidth * (y / imageHeight); 
				imageHeight = y; 
				if (imageWidth > x) { 
					imageHeight = imageHeight * (x / imageWidth); 
					imageWidth = x;
				}
			}
			// End Resizing
			
			TB_WIDTH = imageWidth + 30;
			TB_HEIGHT = imageHeight + 60;
			$("#TB_window").append("<a href='' id='TB_ImageOff' title='Zavřít'><img id='TB_Image' src='"+url+"' width='"+imageWidth+"' height='"+imageHeight+"' alt='"+caption+"'/></a>" + "<div id='TB_caption'>"+caption+"<div id='TB_secondLine'>" + TB_imageCount + TB_PrevHTML + TB_NextHTML + "</div></div><div id='TB_closeWindow'><a href='#' id='TB_closeWindowButton' title='Close'>zavřít</a></div>"); 		
			
			$("#TB_closeWindowButton").click(tb_remove);
			
			if (!(TB_PrevHTML === "")) {
				function goPrev(){
					if($(document).unbind("click",goPrev)){$(document).unbind("click",goPrev);}
					$("#TB_window").remove();
					$("body").append("<div id='TB_window'></div>");
					tb_show(TB_PrevCaption, TB_PrevURL, imageGroup);
					return false;	
				}
				$("#TB_prev").click(goPrev);
			}
			
			if (!(TB_NextHTML === "")) {		
				function goNext(){
					$("#TB_window").remove();
					$("body").append("<div id='TB_window'></div>");
					tb_show(TB_NextCaption, TB_NextURL, imageGroup);				
					return false;	
				}
				$("#TB_next").click(goNext);
				
			}

			document.onkeydown = function(e){ 	
				if (e == null) { // ie
					keycode = event.keyCode;
				} else { // mozilla
					keycode = e.which;
				}
				if(keycode == 27){ // close
					tb_remove();
				} else if(keycode == 190){ // display previous image
					if(!(TB_NextHTML == "")){
						document.onkeydown = "";
						goNext();
					}
				} else if(keycode == 188){ // display next image
					if(!(TB_PrevHTML == "")){
						document.onkeydown = "";
						goPrev();
					}
				}	
			};
			
			tb_position();
			$("#TB_load").remove();
			$("#TB_ImageOff").click(tb_remove);
			$("#TB_window").css({display:"block"}); //for safari using css instead of show
			};
			
			imgPreloader.src = url;
		}else{//code to show html pages
			
			var queryString = url.replace(/^[^\?]+\??/,'');
			var params = tb_parseQuery( queryString );

			TB_WIDTH = (params['width']*1) + 30 || 630; //defaults to 630 if no paramaters were added to URL
			TB_HEIGHT = (params['height']*1) + 40 || 440; //defaults to 440 if no paramaters were added to URL
			ajaxContentW = TB_WIDTH - 30;
			ajaxContentH = TB_HEIGHT - 45;
			
			if(url.indexOf('TB_iframe') != -1){				
					urlNoQuery = url.split('TB_');		
					$("#TB_window").append("<div id='TB_title'><div id='TB_ajaxWindowTitle'>"+caption+"</div><div id='TB_closeAjaxWindow'><a href='#' id='TB_closeWindowButton' title='Zavřít'>zavřít</a></div></div><iframe frameborder='0' hspace='0' src='"+urlNoQuery[0]+"' id='TB_iframeContent' name='TB_iframeContent' style='width:"+(ajaxContentW + 29)+"px;height:"+(ajaxContentH + 17)+"px;' onload='tb_showIframe()'> </iframe>");
				}else{
					if($("#TB_window").css("display") != "block"){
						if(params['modal'] != "true"){
						$("#TB_window").append("<div id='TB_title'><div id='TB_ajaxWindowTitle'>"+caption+"</div><div id='TB_closeAjaxWindow'><a href='#' id='TB_closeWindowButton'>zavřít</a></div></div><div id='TB_ajaxContent' style='width:"+ajaxContentW+"px;height:"+ajaxContentH+"px'></div>");
						}else{
						$("#TB_overlay").unbind();
						$("#TB_window").append("<div id='TB_ajaxContent' class='TB_modal' style='width:"+ajaxContentW+"px;height:"+ajaxContentH+"px;'></div>");	
						}
					}else{
						$("#TB_ajaxContent")[0].style.width = ajaxContentW +"px";
						$("#TB_ajaxContent")[0].style.height = ajaxContentH +"px";
						$("#TB_ajaxContent")[0].scrollTop = 0;
						$("#TB_ajaxWindowTitle").html(caption);
					}
			}
					
			$("#TB_closeWindowButton").click(tb_remove);
			
				if(url.indexOf('TB_inline') != -1){	
					$("#TB_ajaxContent").html($('#' + params['inlineId']).html());
					tb_position();
					$("#TB_load").remove();
					$("#TB_window").css({display:"block"}); 
				}else if(url.indexOf('TB_iframe') != -1){
					tb_position();
					if(frames['TB_iframeContent'] === undefined){//be nice to safari
						$("#TB_load").remove();
						$("#TB_window").css({display:"block"});
						$(document).keyup( function(e){ var key = e.keyCode; if(key == 27){tb_remove();}});
					}
				}else{
					$("#TB_ajaxContent").load(url += "&random=" + (new Date().getTime()),function(){//to do a post change this load method
						tb_position();
						$("#TB_load").remove();
						tb_init("#TB_ajaxContent a.thickbox");
						$("#TB_window").css({display:"block"});
					});
				}
			
		}

		if(!params['modal']){
			document.onkeyup = function(e){ 	
				if (e == null) { // ie
					keycode = event.keyCode;
				} else { // mozilla
					keycode = e.which;
				}
				if(keycode == 27){ // close
					tb_remove();
				}	
			};
		}
		
	} catch(e) {
		//nothing here
	}
}

//helper functions below
function tb_showIframe(){
	$("#TB_load").remove();
	$("#TB_window").css({display:"block"});
}

function tb_remove() {
 	$("#TB_imageOff").unbind("click");
	$("#TB_overlay").unbind("click");
	$("#TB_closeWindowButton").unbind("click");
	$("#TB_window").fadeOut("fast",function(){$('#TB_window,#TB_overlay,#TB_HideSelect').remove();});
	$("#TB_load").remove();
	if (typeof document.body.style.maxHeight == "undefined") {//if IE 6
		$("body","html").css({height: "auto", width: "auto"});
		$("html").css("overflow","");
	}
	document.onkeydown = "";
	return false;
}

function tb_position() {
$("#TB_window").css({marginLeft: '-' + parseInt((TB_WIDTH / 2),10) + 'px', width: TB_WIDTH + 'px'});
	if ( !(jQuery.browser.msie && typeof XMLHttpRequest == 'function')) { // take away IE6
		$("#TB_window").css({marginTop: '-' + parseInt((TB_HEIGHT / 2),10) + 'px'});
	}
}

function tb_parseQuery ( query ) {
   var Params = {};
   if ( ! query ) {return Params;}// return empty object
   var Pairs = query.split(/[;&]/);
   for ( var i = 0; i < Pairs.length; i++ ) {
      var KeyVal = Pairs[i].split('=');
      if ( ! KeyVal || KeyVal.length != 2 ) {continue;}
      var key = unescape( KeyVal[0] );
      var val = unescape( KeyVal[1] );
      val = val.replace(/\+/g, ' ');
      Params[key] = val;
   }
   return Params;
}

function tb_getPageSize(){
	var de = document.documentElement;
	var w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
	var h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight;
	arrayPageSize = [w,h];
	return arrayPageSize;
}
*/

(function($) {
	$.fn.hoverIntent = function(f,g) {
		// default configuration options
		var cfg = {
			sensitivity: 7,
			interval: 100,
			timeout: 0
		};
		// override configuration options with user supplied object
		cfg = $.extend(cfg, g ? { over: f, out: g } : f );

		// instantiate variables
		// cX, cY = current X and Y position of mouse, updated by mousemove event
		// pX, pY = previous X and Y position of mouse, set by mouseover and polling interval
		var cX, cY, pX, pY;

		// A private function for getting mouse position
		var track = function(ev) {
			cX = ev.pageX;
			cY = ev.pageY;
		};

		// A private function for comparing current and previous mouse position
		var compare = function(ev,ob) {
			ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
			// compare mouse positions to see if they've crossed the threshold
			if ( ( Math.abs(pX-cX) + Math.abs(pY-cY) ) < cfg.sensitivity ) {
				$(ob).unbind("mousemove",track);
				// set hoverIntent state to true (so mouseOut can be called)
				ob.hoverIntent_s = 1;
				return cfg.over.apply(ob,[ev]);
			} else {
				// set previous coordinates for next time
				pX = cX; pY = cY;
				// use self-calling timeout, guarantees intervals are spaced out properly (avoids JavaScript timer bugs)
				ob.hoverIntent_t = setTimeout( function(){compare(ev, ob);} , cfg.interval );
			}
		};

		// A private function for delaying the mouseOut function
		var delay = function(ev,ob) {
			ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
			ob.hoverIntent_s = 0;
			return cfg.out.apply(ob,[ev]);
		};

		// A private function for handling mouse 'hovering'
		var handleHover = function(e) {
			// next three lines copied from jQuery.hover, ignore children onMouseOver/onMouseOut
			var p = (e.type == "mouseover" ? e.fromElement : e.toElement) || e.relatedTarget;
			while ( p && p != this ) { try { p = p.parentNode; } catch(e) { p = this; } }
			if ( p == this ) { return false; }

			// copy objects to be passed into t (required for event object to be passed in IE)
			var ev = jQuery.extend({},e);
			var ob = this;

			// cancel hoverIntent timer if it exists
			if (ob.hoverIntent_t) { ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); }

			// else e.type == "onmouseover"
			if (e.type == "mouseover") {
				// set "previous" X and Y position based on initial entry point
				pX = ev.pageX; pY = ev.pageY;
				// update "current" X and Y position based on mousemove
				$(ob).bind("mousemove",track);
				// start polling interval (self-calling timeout) to compare mouse coordinates over time
				if (ob.hoverIntent_s != 1) { ob.hoverIntent_t = setTimeout( function(){compare(ev,ob);} , cfg.interval );}

			// else e.type == "onmouseout"
			} else {
				// unbind expensive mousemove event
				$(ob).unbind("mousemove",track);
				// if hoverIntent state is true, then call the mouseOut function after the specified delay
				if (ob.hoverIntent_s == 1) { ob.hoverIntent_t = setTimeout( function(){delay(ev,ob);} , cfg.timeout );}
			}
		};

		// bind the function to the two event listeners
		return this.mouseover(handleHover).mouseout(handleHover);
	};
})(jQuery);


/* Copyright (c) 2007 Paul Bakaus (paul.bakaus@googlemail.com) and Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * $LastChangedDate: 2007-08-17 14:14:11 -0400 (Fri, 17 Aug 2007) $
 * $Rev: 2759 $
 *
 * Version: 1.1.2
 *
 * Requires: jQuery 1.1.3+
 */

(function($){

// store a copy of the core height and width methods
var height = $.fn.height,
    width  = $.fn.width;

$.fn.extend({
	/**
	 * If used on document, returns the document's height (innerHeight).
	 * If used on window, returns the viewport's (window) height.
	 * See core docs on height() to see what happens when used on an element.
	 *
	 * @example $("#testdiv").height()
	 * @result 200
	 *
	 * @example $(document).height()
	 * @result 800
	 *
	 * @example $(window).height()
	 * @result 400
	 *
	 * @name height
	 * @type Number
	 * @cat Plugins/Dimensions
	 */
	height: function() {
		if ( !this[0] ) error();
		if ( this[0] == window )
			if ( $.browser.opera || ($.browser.safari && parseInt($.browser.version) > 520) )
				return self.innerHeight - (($(document).height() > self.innerHeight) ? getScrollbarWidth() : 0);

			else if ( $.browser.safari )
				return self.innerHeight;
			else
          //return $.boxModel && Math.min(document.documentElement.clientHeight,document.body.clientHeight);
      		return $.boxModel && document.documentElement.clientHeight || document.body.clientHeight;
		if ( this[0] == document ) 
			return Math.max( ($.boxModel && document.documentElement.scrollHeight || document.body.scrollHeight), document.body.offsetHeight );
		
		return height.apply(this, arguments);
	},
	
	/**
	 * If used on document, returns the document's width (innerWidth).
	 * If used on window, returns the viewport's (window) width.
	 * See core docs on width() to see what happens when used on an element.
	 *
	 * @example $("#testdiv").width()
	 * @result 200
	 *
	 * @example $(document).width()
	 * @result 800
	 *
	 * @example $(window).width()
	 * @result 400
	 *
	 * @name width
	 * @type Number
	 * @cat Plugins/Dimensions
	 */
	width: function() {
		if (!this[0]) error();
		if ( this[0] == window )
			if ( $.browser.opera || ($.browser.safari && parseInt($.browser.version) > 520) )
				return self.innerWidth - (($(document).width() > self.innerWidth) ? getScrollbarWidth() : 0);
			else if ( $.browser.safari )
				return self.innerWidth;
			else
                return $.boxModel && document.documentElement.clientWidth || document.body.clientWidth;

		if ( this[0] == document )
			if ($.browser.mozilla) {
				// mozilla reports scrollWidth and offsetWidth as the same
				var scrollLeft = self.pageXOffset;
				self.scrollTo(99999999, self.pageYOffset);
				var scrollWidth = self.pageXOffset;
				self.scrollTo(scrollLeft, self.pageYOffset);
				return document.body.offsetWidth + scrollWidth;
			}
			else 
				return Math.max( (($.boxModel && !$.browser.safari) && document.documentElement.scrollWidth || document.body.scrollWidth), document.body.offsetWidth );

		return width.apply(this, arguments);
	},
	
	/**
	 * Gets the inner height (excludes the border and includes the padding) for the first matched element.
	 * If used on document, returns the document's height (innerHeight).
	 * If used on window, returns the viewport's (window) height.
	 *
	 * @example $("#testdiv").innerHeight()
	 * @result 210
	 *
	 * @name innerHeight
	 * @type Number
	 * @cat Plugins/Dimensions
	 */
	innerHeight: function() {
		if (!this[0]) error();
		return this[0] == window || this[0] == document ?
			this.height() :
			this.is(':visible') ?
				this[0].offsetHeight - num(this, 'borderTopWidth') - num(this, 'borderBottomWidth') :
				this.height() + num(this, 'paddingTop') + num(this, 'paddingBottom');
	},
	
	/**
	 * Gets the inner width (excludes the border and includes the padding) for the first matched element.
	 * If used on document, returns the document's width (innerWidth).
	 * If used on window, returns the viewport's (window) width.
	 *
	 * @example $("#testdiv").innerWidth()
	 * @result 210
	 *
	 * @name innerWidth
	 * @type Number
	 * @cat Plugins/Dimensions
	 */
	innerWidth: function() {
		if (!this[0]) error();
		return this[0] == window || this[0] == document ?
			this.width() :
			this.is(':visible') ?
				this[0].offsetWidth - num(this, 'borderLeftWidth') - num(this, 'borderRightWidth') :
				this.width() + num(this, 'paddingLeft') + num(this, 'paddingRight');
	},
	
	/**
	 * Gets the outer height (includes the border and padding) for the first matched element.
	 * If used on document, returns the document's height (innerHeight).
	 * If used on window, returns the viewport's (window) height.
	 *
	 * The margin can be included in the calculation by passing an options map with margin
	 * set to true.
	 *
	 * @example $("#testdiv").outerHeight()
	 * @result 220
	 *
	 * @example $("#testdiv").outerHeight({ margin: true })
	 * @result 240
	 *
	 * @name outerHeight
	 * @type Number
	 * @param Map options Optional settings to configure the way the outer height is calculated.
	 * @cat Plugins/Dimensions
	 */
	outerHeight: function(options) {
		if (!this[0]) error();
		options = $.extend({ margin: false }, options || {});
		return this[0] == window || this[0] == document ?
			this.height() :
			this.is(':visible') ?
				this[0].offsetHeight + (options.margin ? (num(this, 'marginTop') + num(this, 'marginBottom')) : 0) :
				this.height() 
					+ num(this,'borderTopWidth') + num(this, 'borderBottomWidth') 
					+ num(this, 'paddingTop') + num(this, 'paddingBottom')
					+ (options.margin ? (num(this, 'marginTop') + num(this, 'marginBottom')) : 0);
	},
	
	/**
	 * Gets the outer width (including the border and padding) for the first matched element.
	 * If used on document, returns the document's width (innerWidth).
	 * If used on window, returns the viewport's (window) width.
	 *
	 * The margin can be included in the calculation by passing an options map with margin
	 * set to true.
	 *
	 * @example $("#testdiv").outerWidth()
	 * @result 1000
	 *
	 * @example $("#testdiv").outerWidth({ margin: true })
	 * @result 1020
	 * 
	 * @name outerHeight
	 * @type Number
	 * @param Map options Optional settings to configure the way the outer width is calculated.
	 * @cat Plugins/Dimensions
	 */
	outerWidth: function(options) {
		if (!this[0]) error();
		options = $.extend({ margin: false }, options || {});
		return this[0] == window || this[0] == document ?
			this.width() :
			this.is(':visible') ?
				this[0].offsetWidth + (options.margin ? (num(this, 'marginLeft') + num(this, 'marginRight')) : 0) :
				this.width() 
					+ num(this, 'borderLeftWidth') + num(this, 'borderRightWidth') 
					+ num(this, 'paddingLeft') + num(this, 'paddingRight')
					+ (options.margin ? (num(this, 'marginLeft') + num(this, 'marginRight')) : 0);
	},
	
	/**
	 * Gets how many pixels the user has scrolled to the right (scrollLeft).
	 * Works on containers with overflow: auto and window/document.
	 *
	 * @example $(window).scrollLeft()
	 * @result 100
	 *
	 * @example $(document).scrollLeft()
	 * @result 100
	 * 
	 * @example $("#testdiv").scrollLeft()
	 * @result 100
	 *
	 * @name scrollLeft
	 * @type Number
	 * @cat Plugins/Dimensions
	 */
	/**
	 * Sets the scrollLeft property for each element and continues the chain.
	 * Works on containers with overflow: auto and window/document.
	 *
	 * @example $(window).scrollLeft(100).scrollLeft()
	 * @result 100
	 * 
	 * @example $(document).scrollLeft(100).scrollLeft()
	 * @result 100
	 *
	 * @example $("#testdiv").scrollLeft(100).scrollLeft()
	 * @result 100
	 *
	 * @name scrollLeft
	 * @param Number value A positive number representing the desired scrollLeft.
	 * @type jQuery
	 * @cat Plugins/Dimensions
	 */
	scrollLeft: function(val) {
		if (!this[0]) error();
		if ( val != undefined )
			// set the scroll left
			return this.each(function() {
				if (this == window || this == document)
					window.scrollTo( val, $(window).scrollTop() );
				else
					this.scrollLeft = val;
			});
		
		// return the scroll left offest in pixels
		if ( this[0] == window || this[0] == document )
			return self.pageXOffset ||
				$.boxModel && document.documentElement.scrollLeft ||
				document.body.scrollLeft;
				
		return this[0].scrollLeft;
	},
	
	/**
	 * Gets how many pixels the user has scrolled to the bottom (scrollTop).
	 * Works on containers with overflow: auto and window/document.
	 *
	 * @example $(window).scrollTop()
	 * @result 100
	 *
	 * @example $(document).scrollTop()
	 * @result 100
	 * 
	 * @example $("#testdiv").scrollTop()
	 * @result 100
	 *
	 * @name scrollTop
	 * @type Number
	 * @cat Plugins/Dimensions
	 */
	/**
	 * Sets the scrollTop property for each element and continues the chain.
	 * Works on containers with overflow: auto and window/document.
	 *
	 * @example $(window).scrollTop(100).scrollTop()
	 * @result 100
	 * 
	 * @example $(document).scrollTop(100).scrollTop()
	 * @result 100
	 *
	 * @example $("#testdiv").scrollTop(100).scrollTop()
	 * @result 100
	 *
	 * @name scrollTop
	 * @param Number value A positive number representing the desired scrollTop.
	 * @type jQuery
	 * @cat Plugins/Dimensions
	 */
	scrollTop: function(val) {
		if (!this[0]) error();
		if ( val != undefined )
			// set the scroll top
			return this.each(function() {
				if (this == window || this == document)
					window.scrollTo( $(window).scrollLeft(), val );
				else
					this.scrollTop = val;
			});
		
		// return the scroll top offset in pixels
		if ( this[0] == window || this[0] == document )
			return self.pageYOffset ||
				$.boxModel && document.documentElement.scrollTop ||
				document.body.scrollTop;

		return this[0].scrollTop;
	},
	
	/** 
	 * Gets the top and left positioned offset in pixels.
	 * The positioned offset is the offset between a positioned
	 * parent and the element itself.
	 *
	 * For accurate calculations make sure to use pixel values for margins, borders and padding.
	 *
	 * @example $("#testdiv").position()
	 * @result { top: 100, left: 100 }
	 *
	 * @example var position = {};
	 * $("#testdiv").position(position)
	 * @result position = { top: 100, left: 100 }
	 * 
	 * @name position
	 * @param Object returnObject Optional An object to store the return value in, so as not to break the chain. If passed in the
	 *                            chain will not be broken and the result will be assigned to this object.
	 * @type Object
	 * @cat Plugins/Dimensions
	 */
	position: function(returnObject) {
		return this.offset({ margin: false, scroll: false, relativeTo: this.offsetParent() }, returnObject);
	},
	
	/**
	 * Gets the location of the element in pixels from the top left corner of the viewport.
	 * The offset method takes an optional map of key value pairs to configure the way
	 * the offset is calculated. Here are the different options.
	 *
	 * (Boolean) margin - Should the margin of the element be included in the calculations? True by default.
	 * (Boolean) border - Should the border of the element be included in the calculations? False by default. 
	 * (Boolean) padding - Should the padding of the element be included in the calculations? False by default. 
	 * (Boolean) scroll - Should the scroll offsets of the parent elements be included in the calculations? True by default.
	 *                    When true it adds the total scroll offsets of all parents to the total offset and also adds two
	 *                    properties to the returned object, scrollTop and scrollLeft.
	 * (Boolean) lite - When true it will use the offsetLite method instead of the full-blown, slower offset method. False by default.
	 *                  Only use this when margins, borders and padding calculations don't matter.
	 * (HTML Element) relativeTo - This should be a parent of the element and should have position (like absolute or relative).
	 *                             It will retreive the offset relative to this parent element. By default it is the body element.
	 *
	 * Also an object can be passed as the second paramater to
	 * catch the value of the return and continue the chain.
	 *
	 * For accurate calculations make sure to use pixel values for margins, borders and padding.
	 * 
	 * Known issues:
	 *  - Issue: A div positioned relative or static without any content before it and its parent will report an offsetTop of 0 in Safari
	 *    Workaround: Place content before the relative div ... and set height and width to 0 and overflow to hidden
	 *
	 * @example $("#testdiv").offset()
	 * @result { top: 100, left: 100, scrollTop: 10, scrollLeft: 10 }
	 *
	 * @example $("#testdiv").offset({ scroll: false })
	 * @result { top: 90, left: 90 }
	 *
	 * @example var offset = {}
	 * $("#testdiv").offset({ scroll: false }, offset)
	 * @result offset = { top: 90, left: 90 }
	 *
	 * @name offset
	 * @param Map options Optional settings to configure the way the offset is calculated.
	 * @param Object returnObject An object to store the return value in, so as not to break the chain. If passed in the
	 *                            chain will not be broken and the result will be assigned to this object.
	 * @type Object
	 * @cat Plugins/Dimensions
	 */
	offset: function(options, returnObject) {
		if (!this[0]) error();
		var x = 0, y = 0, sl = 0, st = 0,
		    elem = this[0], parent = this[0], op, parPos, elemPos = $.css(elem, 'position'),
		    mo = $.browser.mozilla, ie = $.browser.msie, oa = $.browser.opera,
		    sf = $.browser.safari, sf3 = $.browser.safari && parseInt($.browser.version) > 520,
		    absparent = false, relparent = false, 
		    options = $.extend({ margin: true, border: false, padding: false, scroll: true, lite: false, relativeTo: document.body }, options || {});
		
		// Use offsetLite if lite option is true
		if (options.lite) return this.offsetLite(options, returnObject);
		// Get the HTMLElement if relativeTo is a jquery collection
		if (options.relativeTo.jquery) options.relativeTo = options.relativeTo[0];
		
		if (elem.tagName == 'BODY') {
			// Safari 2 is the only one to get offsetLeft and offsetTop properties of the body "correct"
			// Except they all mess up when the body is positioned absolute or relative
			x = elem.offsetLeft;
			y = elem.offsetTop;
			// Mozilla ignores margin and subtracts border from body element
			if (mo) {
				x += num(elem, 'marginLeft') + (num(elem, 'borderLeftWidth')*2);
				y += num(elem, 'marginTop')  + (num(elem, 'borderTopWidth') *2);
			} else
			// Opera ignores margin
			if (oa) {
				x += num(elem, 'marginLeft');
				y += num(elem, 'marginTop');
			} else
			// IE does not add the border in Standards Mode
			if ((ie && jQuery.boxModel)) {
				x += num(elem, 'borderLeftWidth');
				y += num(elem, 'borderTopWidth');
			} else
			// Safari 3 doesn't not include border or margin
			if (sf3) {
				x += num(elem, 'marginLeft') + num(elem, 'borderLeftWidth');
				y += num(elem, 'marginTop')  + num(elem, 'borderTopWidth');
			}
		} else {
			do {
				parPos = $.css(parent, 'position');
			
				x += parent.offsetLeft;
				y += parent.offsetTop;

				// Mozilla and IE do not add the border
				// Mozilla adds the border for table cells
				if ((mo && !parent.tagName.match(/^t[d|h]$/i)) || ie || sf3) {
					// add borders to offset
					x += num(parent, 'borderLeftWidth');
					y += num(parent, 'borderTopWidth');

					// Mozilla does not include the border on body if an element isn't positioned absolute and is without an absolute parent
					if (mo && parPos == 'absolute') absparent = true;
					// IE does not include the border on the body if an element is position static and without an absolute or relative parent
					if (ie && parPos == 'relative') relparent = true;
				}

				op = parent.offsetParent || document.body;
				if (options.scroll || mo) {
					do {
						if (options.scroll) {
							// get scroll offsets
							sl += parent.scrollLeft;
							st += parent.scrollTop;
						}
						
						// Opera sometimes incorrectly reports scroll offset for elements with display set to table-row or inline
						if (oa && ($.css(parent, 'display') || '').match(/table-row|inline/)) {
							sl = sl - ((parent.scrollLeft == parent.offsetLeft) ? parent.scrollLeft : 0);
							st = st - ((parent.scrollTop == parent.offsetTop) ? parent.scrollTop : 0);
						}
				
						// Mozilla does not add the border for a parent that has overflow set to anything but visible
						if (mo && parent != elem && $.css(parent, 'overflow') != 'visible') {
							x += num(parent, 'borderLeftWidth');
							y += num(parent, 'borderTopWidth');
						}
				
						parent = parent.parentNode;
					} while (parent != op);
				}
				parent = op;
				
				// exit the loop if we are at the relativeTo option but not if it is the body or html tag
				if (parent == options.relativeTo && !(parent.tagName == 'BODY' || parent.tagName == 'HTML'))  {
					// Mozilla does not add the border for a parent that has overflow set to anything but visible
					if (mo && parent != elem && $.css(parent, 'overflow') != 'visible') {
						x += num(parent, 'borderLeftWidth');
						y += num(parent, 'borderTopWidth');
					}
					// Safari 2 and opera includes border on positioned parents
					if ( ((sf && !sf3) || oa) && parPos != 'static' ) {
						x -= num(op, 'borderLeftWidth');
						y -= num(op, 'borderTopWidth');
					}
					break;
				}
				if (parent.tagName == 'BODY' || parent.tagName == 'HTML') {
					// Safari 2 and IE Standards Mode doesn't add the body margin for elments positioned with static or relative
					if (((sf && !sf3) || (ie && $.boxModel)) && elemPos != 'absolute' && elemPos != 'fixed') {
						x += num(parent, 'marginLeft');
						y += num(parent, 'marginTop');
					}
					// Safari 3 does not include the border on body
					// Mozilla does not include the border on body if an element isn't positioned absolute and is without an absolute parent
					// IE does not include the border on the body if an element is positioned static and without an absolute or relative parent
					if ( sf3 || (mo && !absparent && elemPos != 'fixed') || 
					     (ie && elemPos == 'static' && !relparent) ) {
						x += num(parent, 'borderLeftWidth');
						y += num(parent, 'borderTopWidth');
					}
					break; // Exit the loop
				}
			} while (parent);
		}

		var returnValue = handleOffsetReturn(elem, options, x, y, sl, st);

		if (returnObject) { $.extend(returnObject, returnValue); return this; }
		else              { return returnValue; }
	},
	
	/**
	 * Gets the location of the element in pixels from the top left corner of the viewport.
	 * This method is much faster than offset but not as accurate when borders and margins are
	 * on the element and/or its parents. This method can be invoked
	 * by setting the lite option to true in the offset method.
	 * The offsetLite method takes an optional map of key value pairs to configure the way
	 * the offset is calculated. Here are the different options.
	 *
	 * (Boolean) margin - Should the margin of the element be included in the calculations? True by default.
	 * (Boolean) border - Should the border of the element be included in the calculations? False by default. 
	 * (Boolean) padding - Should the padding of the element be included in the calcuations? False by default. 
	 * (Boolean) scroll - Sould the scroll offsets of the parent elements be included int he calculations? True by default.
	 *                    When true it adds the total scroll offsets of all parents to the total offset and also adds two
	 *                    properties to the returned object, scrollTop and scrollLeft.
	 * (HTML Element) relativeTo - This should be a parent of the element and should have position (like absolute or relative).
	 *                             It will retreive the offset relative to this parent element. By default it is the body element.
	 *
	 * @name offsetLite
	 * @param Map options Optional settings to configure the way the offset is calculated.
	 * @param Object returnObject An object to store the return value in, so as not to break the chain. If passed in the
	 *                            chain will not be broken and the result will be assigned to this object.
	 * @type Object
	 * @cat Plugins/Dimensions
	 */
	offsetLite: function(options, returnObject) {
		if (!this[0]) error();
		var x = 0, y = 0, sl = 0, st = 0, parent = this[0], offsetParent, 
		    options = $.extend({ margin: true, border: false, padding: false, scroll: true, relativeTo: document.body }, options || {});
				
		// Get the HTMLElement if relativeTo is a jquery collection
		if (options.relativeTo.jquery) options.relativeTo = options.relativeTo[0];
		
		do {
			x += parent.offsetLeft;
			y += parent.offsetTop;

			offsetParent = parent.offsetParent || document.body;
			if (options.scroll) {
				// get scroll offsets
				do {
					sl += parent.scrollLeft;
					st += parent.scrollTop;
					parent = parent.parentNode;
				} while(parent != offsetParent);
			}
			parent = offsetParent;
		} while (parent && parent.tagName != 'BODY' && parent.tagName != 'HTML' && parent != options.relativeTo);

		var returnValue = handleOffsetReturn(this[0], options, x, y, sl, st);

		if (returnObject) { $.extend(returnObject, returnValue); return this; }
		else              { return returnValue; }
	},
	
	/**
	 * Returns a jQuery collection with the positioned parent of 
	 * the first matched element. This is the first parent of 
	 * the element that has position (as in relative or absolute).
	 *
	 * @name offsetParent
	 * @type jQuery
	 * @cat Plugins/Dimensions
	 */
	offsetParent: function() {
		if (!this[0]) error();
		var offsetParent = this[0].offsetParent;
		while ( offsetParent && (offsetParent.tagName != 'BODY' && $.css(offsetParent, 'position') == 'static') )
			offsetParent = offsetParent.offsetParent;
		return $(offsetParent);
	}
});

/**
 * Throws an error message when no elements are in the jQuery collection
 * @private
 */
var error = function() {
	throw "Dimensions: jQuery collection is empty";
};

/**
 * Handles converting a CSS Style into an Integer.
 * @private
 */
var num = function(el, prop) {
	return parseInt($.css(el.jquery?el[0]:el,prop))||0;
};

/**
 * Handles the return value of the offset and offsetLite methods.
 * @private
 */
var handleOffsetReturn = function(elem, options, x, y, sl, st) {
	if ( !options.margin ) {
		x -= num(elem, 'marginLeft');
		y -= num(elem, 'marginTop');
	}

	// Safari and Opera do not add the border for the element
	if ( options.border && (($.browser.safari && parseInt($.browser.version) < 520) || $.browser.opera) ) {
		x += num(elem, 'borderLeftWidth');
		y += num(elem, 'borderTopWidth');
	} else if ( !options.border && !(($.browser.safari && parseInt($.browser.version) < 520) || $.browser.opera) ) {
		x -= num(elem, 'borderLeftWidth');
		y -= num(elem, 'borderTopWidth');
	}

	if ( options.padding ) {
		x += num(elem, 'paddingLeft');
		y += num(elem, 'paddingTop');
	}
	
	// do not include scroll offset on the element ... opera sometimes reports scroll offset as actual offset
	if ( options.scroll && (!$.browser.opera || elem.offsetLeft != elem.scrollLeft && elem.offsetTop != elem.scrollLeft) ) {
		sl -= elem.scrollLeft;
		st -= elem.scrollTop;
	}

	return options.scroll ? { top: y - st, left: x - sl, scrollTop:  st, scrollLeft: sl }
	                      : { top: y, left: x };
};

/**
 * Gets the width of the OS scrollbar
 * @private
 */
var scrollbarWidth = 0;
var getScrollbarWidth = function() {
	if (!scrollbarWidth) {
		var testEl = $('<div>')
				.css({
					width: 100,
					height: 100,
					overflow: 'auto',
					position: 'absolute',
					top: -1000,
					left: -1000
				})
				.appendTo('body');
		scrollbarWidth = 100 - testEl
			.append('<div>')
			.find('div')
				.css({
					width: '100%',
					height: 200
				})
				.width();
		testEl.remove();
	}
	return scrollbarWidth;
};

})(jQuery);