/* SpryMenuBar.js - version 0.12 - Spry Pre-Release 1.6.1

 Copyright (c) 2006. Adobe Systems Incorporated.
 All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

    Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.
    Redistributions in binary form must reproduce the above copyright notice,
     this list of conditions and the following disclaimer in the documentation
     and/or other materials provided with the distribution.
    Neither the name of Adobe Systems Incorporated nor the names of its
     contributors may be used to endorse or promote products derived from this
     software without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.*/

/*******************************************************************************

 SpryMenuBar.js
 This file handles the JavaScript for Spry Menu Bar.  You should have no need
 to edit this file.  Some highlights of the MenuBar object is that timers are
 used to keep submenus from showing up until the user has hovered over the parent
 menu item for some time, as well as a timer for when they leave a submenu to keep
 showing that submenu until the timer fires.

 *******************************************************************************/

var Spry; if (!Spry) Spry = {}; if (!Spry.Widget) Spry.Widget = {};

Spry.BrowserSniff = function()
{
	var b = navigator.appName.toString();
	var up = navigator.platform.toString();
	var ua = navigator.userAgent.toString();

	this.mozilla = this.ie = this.opera = this.safari = false;
	var re_opera = /Opera.([0-9\.]*)/i;
	var re_msie = /MSIE.([0-9\.]*)/i;
	var re_gecko = /gecko/i;
	var re_safari = /(applewebkit|safari)\/([\d\.]*)/i;
	var r = false;

	if ( (r = ua.match(re_opera))) {
		this.opera = true;
		this.version = parseFloat(r[1]);
	} else if ( (r = ua.match(re_msie))) {
		this.ie = true;
		this.version = parseFloat(r[1]);
	} else if ( (r = ua.match(re_safari))) {
		this.safari = true;
		this.version = parseFloat(r[2]);
	} else if (ua.match(re_gecko)) {
		var re_gecko_version = /rv:\s*([0-9\.]+)/i;
		r = ua.match(re_gecko_version);
		this.mozilla = true;
		this.version = parseFloat(r[1]);
	}
	this.windows = this.mac = this.linux = false;

	this.Platform = ua.match(/windows/i) ? "windows" :
					(ua.match(/linux/i) ? "linux" :
					(ua.match(/mac/i) ? "mac" :
					ua.match(/unix/i)? "unix" : "unknown"));
	this[this.Platform] = true;
	this.v = this.version;

	if (this.safari && this.mac && this.mozilla) {
		this.mozilla = false;
	}
};

Spry.is = new Spry.BrowserSniff();

/* Constructor for Menu Bar
 element should be an ID of an unordered list (<ul> tag)
 preloadImage1 and preloadImage2 are images for the rollover state of a menu*/
Spry.Widget.MenuBar = function(element, opts)
{
	this.init(element, opts);
};

Spry.Widget.MenuBar.prototype.init = function(element, opts)
{
	this.element = this.getElement(element);

	/* represents the current (sub)menu we are operating on*/
	this.currMenu = null;
	this.showDelay = 250;
	this.hideDelay = 600;
	if(typeof document.getElementById == 'undefined' || (navigator.vendor == 'Apple Computer, Inc.' && typeof window.XMLHttpRequest == 'undefined') || (Spry.is.ie && typeof document.uniqueID == 'undefined'))
	{
		/* bail on older unsupported browsers*/
		return;
	}

	/* Fix IE6 CSS images flicker*/
	if (Spry.is.ie && Spry.is.version < 7){
		try {
			document.execCommand("BackgroundImageCache", false, true);
		} catch(err) {}
	}

	this.upKeyCode = Spry.Widget.MenuBar.KEY_UP;
	this.downKeyCode = Spry.Widget.MenuBar.KEY_DOWN;
	this.leftKeyCode = Spry.Widget.MenuBar.KEY_LEFT;
	this.rightKeyCode = Spry.Widget.MenuBar.KEY_RIGHT;
	this.escKeyCode = Spry.Widget.MenuBar.KEY_ESC;

	this.hoverClass = 'MenuBarItemHover';
	this.subHoverClass = 'MenuBarItemSubmenuHover';
	this.subVisibleClass ='MenuBarSubmenuVisible';
	this.hasSubClass = 'MenuBarItemSubmenu';
	this.activeClass = 'MenuBarActive';
	this.isieClass = 'MenuBarItemIE';
	this.verticalClass = 'MenuBarVertical';
	this.horizontalClass = 'MenuBarHorizontal';
	this.enableKeyboardNavigation = true;

	this.hasFocus = false;
	/* load hover images now*/
	if(opts)
	{
		for(var k in opts)
		{
			if (typeof this[k] == 'undefined')
			{
				var rollover = new Image;
				rollover.src = opts[k];
			}
		}
		Spry.Widget.MenuBar.setOptions(this, opts);
	}

	/* safari doesn't support tabindex*/
	if (Spry.is.safari)
		this.enableKeyboardNavigation = false;

	if(this.element)
	{
		this.currMenu = this.element;
		var items = this.element.getElementsByTagName('li');
		for(var i=0; i<items.length; i++)
		{
			if (i > 0 && this.enableKeyboardNavigation)
				items[i].getElementsByTagName('a')[0].tabIndex='-1';

			this.initialize(items[i], element);
			if(Spry.is.ie)
			{
				this.addClassName(items[i], this.isieClass);
				items[i].style.position = "static";
			}
		}
		if (this.enableKeyboardNavigation)
		{
			var self = this;
			this.addEventListener(document, 'keydown', function(e){self.keyDown(e); }, false);
		}

		if(Spry.is.ie)
		{
			if(this.hasClassName(this.element, this.verticalClass))
			{
				this.element.style.position = "relative";
			}
			var linkitems = this.element.getElementsByTagName('a');
			for(var i=0; i<linkitems.length; i++)
			{
				linkitems[i].style.position = "relative";
			}
		}
	}
};
Spry.Widget.MenuBar.KEY_ESC = 27;
Spry.Widget.MenuBar.KEY_UP = 38;
Spry.Widget.MenuBar.KEY_DOWN = 40;
Spry.Widget.MenuBar.KEY_LEFT = 37;
Spry.Widget.MenuBar.KEY_RIGHT = 39;

Spry.Widget.MenuBar.prototype.getElement = function(ele)
{
	if (ele && typeof ele == "string")
		return document.getElementById(ele);
	return ele;
};

Spry.Widget.MenuBar.prototype.hasClassName = function(ele, className)
{
	if (!ele || !className || !ele.className || ele.className.search(new RegExp("\\b" + className + "\\b")) == -1)
	{
		return false;
	}
	return true;
};

Spry.Widget.MenuBar.prototype.addClassName = function(ele, className)
{
	if (!ele || !className || this.hasClassName(ele, className))
		return;
	ele.className += (ele.className ? " " : "") + className;
};

Spry.Widget.MenuBar.prototype.removeClassName = function(ele, className)
{
	if (!ele || !className || !this.hasClassName(ele, className))
		return;
	ele.className = ele.className.replace(new RegExp("\\s*\\b" + className + "\\b", "g"), "");
};

/* addEventListener for Menu Bar
 attach an event to a tag without creating obtrusive HTML code*/
Spry.Widget.MenuBar.prototype.addEventListener = function(element, eventType, handler, capture)
{
	try
	{
		if (element.addEventListener)
		{
			element.addEventListener(eventType, handler, capture);
		}
		else if (element.attachEvent)
		{
			element.attachEvent('on' + eventType, handler);
		}
	}
	catch (e) {}
};

/* createIframeLayer for Menu Bar
 creates an IFRAME underneath a menu so that it will show above form controls and ActiveX*/
Spry.Widget.MenuBar.prototype.createIframeLayer = function(menu)
{
	var layer = document.createElement('iframe');
	layer.tabIndex = '-1';
	layer.src = 'javascript:""';
	layer.frameBorder = '0';
	layer.scrolling = 'no';
	menu.parentNode.appendChild(layer);
	
	layer.style.left = menu.offsetLeft + 'px';
	layer.style.top = menu.offsetTop + 'px';
	layer.style.width = menu.offsetWidth + 'px';
	layer.style.height = menu.offsetHeight + 'px';
};

/* removeIframeLayer for Menu Bar
 removes an IFRAME underneath a menu to reveal any form controls and ActiveX*/
Spry.Widget.MenuBar.prototype.removeIframeLayer =  function(menu)
{
	var layers = ((menu == this.element) ? menu : menu.parentNode).getElementsByTagName('iframe');
	while(layers.length > 0)
	{
		layers[0].parentNode.removeChild(layers[0]);
	}
};

/* clearMenus for Menu Bar
 root is the top level unordered list (<ul> tag)*/
Spry.Widget.MenuBar.prototype.clearMenus = function(root)
{
	var menus = root.getElementsByTagName('ul');
	for(var i=0; i<menus.length; i++)
		this.hideSubmenu(menus[i]);

	this.removeClassName(this.element, this.activeClass);
};

/* bubbledTextEvent for Menu Bar
 identify bubbled up text events in Safari so we can ignore them*/
Spry.Widget.MenuBar.prototype.bubbledTextEvent = function()
{
	return Spry.is.safari && (event.target == event.relatedTarget.parentNode || (event.eventPhase == 3 && event.target.parentNode == event.relatedTarget));
};

/* showSubmenu for Menu Bar
 set the proper CSS class on this menu to show it*/
Spry.Widget.MenuBar.prototype.showSubmenu = function(menu)
{
	if(this.currMenu)
	{
		this.clearMenus(this.currMenu);
		this.currMenu = null;
	}
	
	if(menu)
	{
		this.addClassName(menu, this.subVisibleClass);
		if(typeof document.all != 'undefined' && !Spry.is.opera && navigator.vendor != 'KDE')
		{
			if(!this.hasClassName(this.element, this.horizontalClass) || menu.parentNode.parentNode != this.element)
			{
				menu.style.top = menu.parentNode.offsetTop + 'px';
			}
		}
		if(Spry.is.ie && Spry.is.version < 7)
		{
			this.createIframeLayer(menu);
		}
	}
	this.addClassName(this.element, this.activeClass);
};

/* hideSubmenu for Menu Bar
 remove the proper CSS class on this menu to hide it*/
Spry.Widget.MenuBar.prototype.hideSubmenu = function(menu)
{
	if(menu)
	{
		this.removeClassName(menu, this.subVisibleClass);
		if(typeof document.all != 'undefined' && !Spry.is.opera && navigator.vendor != 'KDE')
		{
			menu.style.top = '';
			menu.style.left = '';
		}
		if(Spry.is.ie && Spry.is.version < 7)
			this.removeIframeLayer(menu);
	}
};

/* initialize for Menu Bar
 create event listeners for the Menu Bar widget so we can properly
 show and hide submenus*/
Spry.Widget.MenuBar.prototype.initialize = function(listitem, element)
{
	var opentime, closetime;
	var link = listitem.getElementsByTagName('a')[0];
	var submenus = listitem.getElementsByTagName('ul');
	var menu = (submenus.length > 0 ? submenus[0] : null);

	if(menu)
		this.addClassName(link, this.hasSubClass);

	if(!Spry.is.ie)
	{
		/* define a simple function that comes standard in IE to determine
		 if a node is within another node*/
		listitem.contains = function(testNode)
		{
			/* this refers to the list item*/
			if(testNode == null)
				return false;

			if(testNode == this)
				return true;
			else
				return this.contains(testNode.parentNode);
		};
	}

	/* need to save this for scope further down*/
	var self = this;
	this.addEventListener(listitem, 'mouseover', function(e){self.mouseOver(listitem, e);}, false);
	this.addEventListener(listitem, 'mouseout', function(e){if (self.enableKeyboardNavigation) self.clearSelection(); self.mouseOut(listitem, e);}, false);

	if (this.enableKeyboardNavigation)
	{
		this.addEventListener(link, 'blur', function(e){self.onBlur(listitem);}, false);
		this.addEventListener(link, 'focus', function(e){self.keyFocus(listitem, e);}, false);
	}
};
Spry.Widget.MenuBar.prototype.keyFocus = function (listitem, e)
{
	this.lastOpen = listitem.getElementsByTagName('a')[0];
	this.addClassName(this.lastOpen, listitem.getElementsByTagName('ul').length > 0 ? this.subHoverClass : this.hoverClass);
	this.hasFocus = true;
};
Spry.Widget.MenuBar.prototype.onBlur = function (listitem)
{
	this.clearSelection(listitem);
};
Spry.Widget.MenuBar.prototype.clearSelection = function(el){
	/*search any intersection with the current open element*/
	if (!this.lastOpen)
		return;

	if (el)
	{
		el = el.getElementsByTagName('a')[0];
		
		/* check children*/
		var item = this.lastOpen;
		while (item != this.element)
		{
			var tmp = el;
			while (tmp != this.element)
			{
				if (tmp == item)
					return;
				try{
					tmp = tmp.parentNode;
				}catch(err){break;}
			}
			item = item.parentNode;
		}
	}
	var item = this.lastOpen;
	while (item != this.element)
	{
		this.hideSubmenu(item.parentNode);
		var link = item.getElementsByTagName('a')[0];
		this.removeClassName(link, this.hoverClass);
		this.removeClassName(link, this.subHoverClass);
		item = item.parentNode;
	}
	this.lastOpen = false;
};
Spry.Widget.MenuBar.prototype.keyDown = function (e)
{
	if (!this.hasFocus)
		return;

	if (!this.lastOpen)
	{
		this.hasFocus = false;
		return;
	}

	var e = e|| event;
	var listitem = this.lastOpen.parentNode;
	var link = this.lastOpen;
	var submenus = listitem.getElementsByTagName('ul');
	var menu = (submenus.length > 0 ? submenus[0] : null);
	var hasSubMenu = (menu) ? true : false;

	var opts = [listitem, menu, null, this.getSibling(listitem, 'previousSibling'), this.getSibling(listitem, 'nextSibling')];
	
	if (!opts[3])
		opts[2] = (listitem.parentNode.parentNode.nodeName.toLowerCase() == 'li')?listitem.parentNode.parentNode:null;

	var found = 0;
	switch (e.keyCode){
		case this.upKeyCode:
			found = this.getElementForKey(opts, 'y', 1);
			break;
		case this.downKeyCode:
			found = this.getElementForKey(opts, 'y', -1);
			break;
		case this.leftKeyCode:
			found = this.getElementForKey(opts, 'x', 1);
			break;
		case this.rightKeyCode:
			found = this.getElementForKey(opts, 'x', -1);
			break;
		case this.escKeyCode:
		case 9:
			this.clearSelection();
			this.hasFocus = false;
		default: return;
	}
	switch (found)
	{
		case 0: return;
		case 1:
			/*subopts*/
			this.mouseOver(listitem, e);
			break;
		case 2:
			/*parent*/
			this.mouseOut(opts[2], e);
			break;
		case 3:
		case 4:
			/* left - right*/
			this.removeClassName(link, hasSubMenu ? this.subHoverClass : this.hoverClass);
			break;
	}
	var link = opts[found].getElementsByTagName('a')[0];
	if (opts[found].nodeName.toLowerCase() == 'ul')
		opts[found] = opts[found].getElementsByTagName('li')[0];

	this.addClassName(link, opts[found].getElementsByTagName('ul').length > 0 ? this.subHoverClass : this.hoverClass);
	this.lastOpen = link;
	opts[found].getElementsByTagName('a')[0].focus();
  
        /*stop further event handling by the browser*/
	return Spry.Widget.MenuBar.stopPropagation(e);
};
Spry.Widget.MenuBar.prototype.mouseOver = function (listitem, e)
{
	var link = listitem.getElementsByTagName('a')[0];
	var submenus = listitem.getElementsByTagName('ul');
	var menu = (submenus.length > 0 ? submenus[0] : null);
	var hasSubMenu = (menu) ? true : false;
	if (this.enableKeyboardNavigation)
		this.clearSelection(listitem);

	if(this.bubbledTextEvent())
	{
		/* ignore bubbled text events*/
		return;
	}

	if (listitem.closetime)
		clearTimeout(listitem.closetime);

	if(this.currMenu == listitem)
	{
		this.currMenu = null;
	}

	/* move the focus too*/
	if (this.hasFocus)
		link.focus();

	/* show menu highlighting*/
	this.addClassName(link, hasSubMenu ? this.subHoverClass : this.hoverClass);
	this.lastOpen = link;
	if(menu && !this.hasClassName(menu, this.subHoverClass))
	{
		var self = this;
		listitem.opentime = window.setTimeout(function(){self.showSubmenu(menu);}, this.showDelay);
	}
};
Spry.Widget.MenuBar.prototype.mouseOut = function (listitem, e)
{
	var link = listitem.getElementsByTagName('a')[0];
	var submenus = listitem.getElementsByTagName('ul');
	var menu = (submenus.length > 0 ? submenus[0] : null);
	var hasSubMenu = (menu) ? true : false;
	if(this.bubbledTextEvent())
	{
		/* ignore bubbled text events*/
		return;
	}

	var related = (typeof e.relatedTarget != 'undefined' ? e.relatedTarget : e.toElement);
	if(!listitem.contains(related))
	{
		if (listitem.opentime) 
			clearTimeout(listitem.opentime);
		this.currMenu = listitem;

		/* remove menu highlighting*/
		this.removeClassName(link, hasSubMenu ? this.subHoverClass : this.hoverClass);
		if(menu)
		{
			var self = this;
			listitem.closetime = window.setTimeout(function(){self.hideSubmenu(menu);}, this.hideDelay);
		}
		if (this.hasFocus)
			link.blur();
	}
};
Spry.Widget.MenuBar.prototype.getSibling = function(element, sibling)
{
	var child = element[sibling];
	while (child && child.nodeName.toLowerCase() !='li')
		child = child[sibling];

	return child;
};
Spry.Widget.MenuBar.prototype.getElementForKey = function(els, prop, dir)
{
	var found = 0;
	var rect = Spry.Widget.MenuBar.getPosition;
	var ref = rect(els[found]);

	var hideSubmenu = false;
	/*make the subelement visible to compute the position*/
	if (els[1] && !this.hasClassName(els[1], this.MenuBarSubmenuVisible))
	{
		els[1].style.visibility = 'hidden';
		this.showSubmenu(els[1]);
		hideSubmenu = true;
	}

	var isVert = this.hasClassName(this.element, this.verticalClass);
	var hasParent = els[0].parentNode.parentNode.nodeName.toLowerCase() == 'li' ? true : false;
	
	for (var i = 1; i < els.length; i++){
		/*when navigating on the y axis in vertical menus, ignore children and parents*/
		if(prop=='y' && isVert && (i==1 || i==2))
		{
			continue;
		}
		/*when navigationg on the x axis in the FIRST LEVEL of horizontal menus, ignore children and parents*/
		if(prop=='x' && !isVert && !hasParent && (i==1 || i==2))
		{
			continue;
		}
			
		if (els[i])
		{
			var tmp = rect(els[i]); 
			if ( (dir * tmp[prop]) < (dir * ref[prop]))
			{
				ref = tmp;
				found = i;
			}
		}
	}
	
	/* hide back the submenu*/
	if (els[1] && hideSubmenu){
		this.hideSubmenu(els[1]);
		els[1].style.visibility =  '';
	}

	return found;
};
Spry.Widget.MenuBar.camelize = function(str)
{
	if (str.indexOf('-') == -1){
		return str;	
	}
	var oStringList = str.split('-');
	var isFirstEntry = true;
	var camelizedString = '';

	for(var i=0; i < oStringList.length; i++)
	{
		if(oStringList[i].length>0)
		{
			if(isFirstEntry)
			{
				camelizedString = oStringList[i];
				isFirstEntry = false;
			}
			else
			{
				var s = oStringList[i];
				camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
			}
		}
	}

	return camelizedString;
};

Spry.Widget.MenuBar.getStyleProp = function(element, prop)
{
	var value;
	try
	{
		if (element.style)
			value = element.style[Spry.Widget.MenuBar.camelize(prop)];

		if (!value)
			if (document.defaultView && document.defaultView.getComputedStyle)
			{
				var css = document.defaultView.getComputedStyle(element, null);
				value = css ? css.getPropertyValue(prop) : null;
			}
			else if (element.currentStyle) 
			{
					value = element.currentStyle[Spry.Widget.MenuBar.camelize(prop)];
			}
	}
	catch (e) {}

	return value == 'auto' ? null : value;
};
Spry.Widget.MenuBar.getIntProp = function(element, prop)
{
	var a = parseInt(Spry.Widget.MenuBar.getStyleProp(element, prop),10);
	if (isNaN(a))
		return 0;
	return a;
};

Spry.Widget.MenuBar.getPosition = function(el, doc)
{
	doc = doc || document;
	if (typeof(el) == 'string') {
		el = doc.getElementById(el);
	}

	if (!el) {
		return false;
	}

	if (el.parentNode === null || Spry.Widget.MenuBar.getStyleProp(el, 'display') == 'none') {
		/*element must be visible to have a box*/
		return false;
	}

	var ret = {x:0, y:0};
	var parent = null;
	var box;

	if (el.getBoundingClientRect) { 
		box = el.getBoundingClientRect();
		var scrollTop = doc.documentElement.scrollTop || doc.body.scrollTop;
		var scrollLeft = doc.documentElement.scrollLeft || doc.body.scrollLeft;
		ret.x = box.left + scrollLeft;
		ret.y = box.top + scrollTop;
	} else if (doc.getBoxObjectFor) { 
		box = doc.getBoxObjectFor(el);
		ret.x = box.x;
		ret.y = box.y;
	} else { 
		ret.x = el.offsetLeft;
		ret.y = el.offsetTop;
		parent = el.offsetParent;
		if (parent != el) {
			while (parent) {
				ret.x += parent.offsetLeft;
				ret.y += parent.offsetTop;
				parent = parent.offsetParent;
			}
		}
		/*opera & (safari absolute) incorrectly account for body offsetTop*/
		if (Spry.is.opera || Spry.is.safari && Spry.Widget.MenuBar.getStyleProp(el, 'position') == 'absolute')
			ret.y -= doc.body.offsetTop;
	}
	if (el.parentNode)
			parent = el.parentNode;
	else
		parent = null;
	if (parent.nodeName){
		var cas = parent.nodeName.toUpperCase();
		while (parent && cas != 'BODY' && cas != 'HTML') {
			cas = parent.nodeName.toUpperCase();
			ret.x -= parent.scrollLeft;
			ret.y -= parent.scrollTop;
			if (parent.parentNode)
				parent = parent.parentNode;
			else
				parent = null;
		}
	}
	return ret;
};

Spry.Widget.MenuBar.stopPropagation = function(ev)
{
	if (ev.stopPropagation)
		ev.stopPropagation();
	else
		ev.cancelBubble = true;
	if (ev.preventDefault) 
		ev.preventDefault();
	else 
		ev.returnValue = false;
};

Spry.Widget.MenuBar.setOptions = function(obj, optionsObj, ignoreUndefinedProps)
{
	if (!optionsObj)
		return;
	for (var optionName in optionsObj)
	{
		if (ignoreUndefinedProps && optionsObj[optionName] == undefined)
			continue;
		obj[optionName] = optionsObj[optionName];
	}
};