// JavaScript Document

var transitionSpeed = 'fast';

$.fn.animateCloseTheLI = function(transitionSpeed) {
	var $this = $(this);
	if ($.browser.msie) {
		$this.customFadeOut(transitionSpeed);
	} else {
		$this.slideUp(transitionSpeed);
	}
};

$.fn.animateOpenTheLI = function(transitionSpeed) {
	var $this = $(this);
	if ($.browser.msie) {
		$this.customFadeIn(transitionSpeed);
	} else {
		$this.slideDown(transitionSpeed);
	}
};

$.fn.closeTheLI = function(closeChildren) {
	if (closeChildren !== false) closeChildren = true;
	var $this = $(this);
	$("#debug").append($this.children("a.link").html() + ".closeTheLI()<br />");
	$this.children("ul").each(function() {
		var $this = $(this);
		$this.animateCloseTheLI(transitionSpeed);
		if (closeChildren) {
			$this.children("li").each(function() {
				var $this = $(this);
				$this.closeTheLI();
			});
		}
	});
	$this.children("a.expand").removeClass("opened");
	$this.children("a.expand").addClass("closed");
};
$.fn.openTheLI = function() {
	var $this = $(this);
	$("#debug").append($this.children("a.link").html() + ".openTheLI()<br />");
	$this.siblings("li").each(function() {
		// close all open sibling menus
		var $this = $(this);
		$this.closeTheLI(false);
	});
	// open the menu
	$(this).children("a.expand").removeClass("closed");
	$(this).children("a.expand").addClass("opened");
	$this.children("ul").animateOpenTheLI(transitionSpeed);
};

$.fn.customFadeIn = function(speed, callback) {
	$(this).fadeIn(speed, function() {
		if($.browser.msie) $(this).get(0).style.removeAttribute('filter');
		if(callback != undefined) callback();
	});
};

$.fn.customFadeOut = function(speed, callback) {
	$(this).fadeOut(speed, function() {
		if($.browser.msie) $(this).get(0).style.removeAttribute('filter');
		if(callback != undefined) callback();
	});
};

$(document).ready(function() {
	$(".accordion a.expand").each(function() {
		var $li = $(this).parent("li");
		if ($li.hasClass("current_path")) {
			$(this).addClass("opened");
		} else {
			$(this).addClass("closed");
		}
	});
	
	$(".accordion ul ul").each(function() {
		var $li = $(this).parent("li");
		if (!$li.hasClass("current_path")) {
			$(this).hide();
		}
	});
	
	$(".accordion a.expand").bind("click", function() {
		var $li = $(this).parent("li");
		if ($(this).hasClass("opened")) {
			$li.closeTheLI();
		} else if ($(this).hasClass("closed")) {
			$li.openTheLI();
		}
		return false;
	});
	
	/* prevents the flicker on pageload in some browsers when menu is briefly fully expanded */
	$(".accordion").css("visibility", "visible");
	
	$(".accordion a.expand").each(function() {
		var $li = $(this).parent("li");
		if ($li.hasClass("current_page")) {
			$li.openTheLI();
		}
	});
	
	$.fn.show_abstract = function(speed, callback) {
		var $this = $(this);
		var $link = $this.parents(".abstract_wrapper").find(".toggle_abstract");
		$this.parents(".minimize").css('background-color', '#eed');
		$this.slideDown("fast");
		$link.html($link.html().replace("Read", "Hide"));
	};
	$.fn.hide_abstract = function(speed, callback) {
		var $this = $(this);
		var $link = $this.parents(".abstract_wrapper").find(".toggle_abstract");
		$this.parents(".minimize").css('background-color', '#fff');
		$this.slideUp("fast");
		$link.html($link.html().replace("Hide", "Read"));
	};
	
	if ((".toggle_abstract").length > 0) {
	
		$(".toggle_abstract").click(function() {
			var $this = $(this);
			var $abstract = $this.parents(".abstract_wrapper").children(".abstract");
			var $all_abstracts = $(".abstract");
			if ($abstract.css("display") == "none") {
				$all_abstracts.each(function(index) { $(this).hide_abstract("fast") });
				$abstract.show_abstract("fast");
			} else {
				$abstract.hide_abstract("fast");
			}
		});
		var id_to_toggle = window.location.href.substr(window.location.href.indexOf("#") + 1);
		$("#toggle_" + id_to_toggle).click();
	}
	
});