;(function($) {
	
	$.fn.dropdown = function(options) {
						
		return this.each(function() {
			var settings = jQuery.extend(true, {}, $.fn.dropdown.defaults, options);
			
			var $this = $(this);
			var $header = $("span:first", $this);
			var $list = $("ul", $this);
			var $listItems = $("li", $list);
			$list.wrap("<div class='pane'></div>");
			//var $pane = $(".pane", $this).corners(settings.corners);
			var $pane = $(".pane", $this);
			
			$this.bind("show", function() {
				$this.showDropdown();
			});
			
			$this.bind("hide", function() {
				$this.hideDropdown();
			});
			
			$this.bind("toggle", function() {
				$this.toggleDropdown();
			});
			
			$header.data("defaultValue", settings.defaultText || $header.text());

			var height = $this.trueHeight({
				onCreate: function(o) {
					return $(".pane", o); // we need lists height, not dropdowns
				}
			});
			
			if (settings.scrollEnabled && height > settings.maximumHeight) {
				$list.width($this.width()-20);
				// get height again, in case changing width bumped some text to multiple lines
				height = $this.trueHeight({
					onCreate: function(o) {
						return $(".pane", o);
					}
				});
				$list.jScrollPane({
					paneWidth:$this.width(),
					paneHeight:settings.maximumHeight,
					contentHeight:height
				});
				$(".jScrollPaneContainer", $pane).width($this.width()).height(settings.maximumHeight);
				$list.height(height);
				$pane.height(settings.maximumHeight);
				height = settings.maximumHeight;
			}
			
			$pane.css(settings.deactivateCSS).hide();
			settings.activateCSS = $.extend(settings.activateCSS, {height: height});
			
			$header.click(function() {
				$this.trigger("toggle");
				$("html,body").bind("mousedown", function() {
					$this.trigger("hide");
				});
				$this.bind("mousedown", function(e) {
					e.stopPropagation();
				});
			});
			/*
			$header.hover(function() {
				$this.clearHideDropdown();
				$this.showDropdown();
			}, function() {
				$this.hideDropdown();
			});

			$pane.hover(function() {
				$this.clearHideDropdown();
			}, function() {
				$this.hideDropdown();
			});
			
			$listItems.hover(function() {
				$this.clearHideDropdown();
				// $(this).children("a").addClass("hover");
			}, function() {
				$this.hideDropdown();
				// $(this).children("a").removeClass("hover");
			});
			*/
			$("li a", $list).click(function() {
				var result = settings.onChange($(this), $(this).text());
				if (settings.save) $this.setHeader($(this).text());
				$this.trigger("hide");
				//return result;
				return false;
			});
			$(this).data('settings', settings);
			$this.setHeader($header.data("defaultValue"));
		});
	};
	
	$.fn.showDropdown = function(options) {
		return this.each(function() {
			var $this = $(this);
			var $header = $("span:first", $this);
			var $pane = $(".pane", $this);
			var $list = $("ul", $this);
			
			var defaults = $this.data('settings');
			var settings = $.extend(true, {}, defaults, options);
			
			settings.onOpen($this);
			$this.css({position:"relative", "z-index":30});
			if (!$pane.is(":visible")) $pane.show();
			$pane.stop().animate(settings.activateCSS, settings.speed, settings.easing);
		});
	};
	
	$.fn.hideDropdown = function(options) {
		return this.each(function() {
			var $this = $(this);
			var $header = $("span:first", $this);
			var $pane = $(".pane", $this);
			var $list = $("ul", $this);
			
			var defaults = $this.data('settings');
			var settings = $.extend(true, {}, defaults, options);
			$("html,body").unbind("mousedown");
			$(".dropdown").unbind("mousedown");
			var hidePane = function() {
				$this.clearHideDropdown();
				$this.css({"z-index":29});
				$pane.stop().animate(settings.deactivateCSS, settings.speed, settings.easing, function() {
					$this.css({position:"static", "z-index":1});
					$pane.hide();
					settings.onClose($this);
				});
			};
			
			$this.data('dropdownHideTimer', setTimeout(function() {
				hidePane();
			}, settings.mouseOffDelay));
		});
	};
	
	$.fn.hideOthers = function() {
		return this.each(function() {
			var $this = $(this);
		});
	};
	
	$.fn.toggleDropdown = function() {
		return this.each(function() {
			var $this = $(this);
			var $pane = $(".pane", $this);
			if ($pane.is(":visible")) $this.hideDropdown();
			else $this.showDropdown();
		});
	};
	
	$.fn.setHeader = function(s) {
		return this.each(function() {
			var $this = $(this);
			if ($this.data("settings").preventLongHeader) {
				var $header = $("span:first", $this).data("value", s); // save the value
				var width = $header.innerWidth();
				$header.css("display", "inline").text(s);
				while ($header.innerWidth() > width - 20) {
					s = s.substring(0, s.length - 4) + "...";
					$header.text(s);
				}
				$header.css("display", "block");
			}
		});
	};
	
	$.fn.clearHideDropdown = function() {
		return this.each(function() {
			var $this = $(this);
			if ($this.data('dropdownHideTimer')) clearTimeout($this.data('dropdownHideTimer'));
		});
	};
		
	$.fn.resetDropdown = function() {
		return this.each(function() {
			var $header = $("span:first", $(this));
			$header.text($header.data("defaultValue"));
		});
	};
	
	$.fn.dropdown.defaults = {
		activateCSS: {opacity:1},
		corners: "5px",
		deactivateCSS: {height:0, opacity:0},
		easing: "swing",
		maximumHeight: 300,
		mouseOffDelay: 100,
		onChange: function(o, value){ return true; },
		onClose: function(o){ return false; },
		onOpen: function(o){ return false; },
		preventLongHeader: true,
		save: true,
		scrollEnabled: true,
		speed: 300
	};
			
})(jQuery);