//** Smooth Navigational Menu- By Dynamic Drive DHTML code library: http://www.dynamicdrive.com
//** Dec 17th, 10 (v1.5)
//NMA (TC) - 2011-05-02: added syncing functionality to v1.5

var ddsmoothmenu={

//Specify full URL to down and right arrow images:
//NMA (TC) - 2010-07-26: modified line below so that it references images within the DDSmoothMenu directory 
//NMA (JV) - 2011-03-03: removed right padding on down.gif (can be applied using style sheet editor)
arrowimages: {down:['downarrowclass', 'DisplayObjects/DDSmoothMenu/down.gif'], right:['rightarrowclass', 'DisplayObjects/DDSmoothMenu/right.gif']},
transition: {overtime:300, outtime:300}, //duration of slide in/ out animation, in milliseconds
shadow: {enable:true, offsetx:5, offsety:5}, //enable shadow?
showhidedelay: {showdelay: 100, hidedelay: 200}, //set delay in milliseconds before sub menus appear and disappear, respectively

///////Stop configuring beyond here///////////////////////////

detectwebkit: navigator.userAgent.toLowerCase().indexOf("applewebkit")!=-1, //detect WebKit browsers (Safari, Chrome etc)
detectie6: document.all && !window.XMLHttpRequest,
css3support: window.msPerformance || (!document.all && document.querySelector), //NMA (JV) 2011-03-07 (v.1.5) detect browsers that support CSS3 box shadows (ie9+, FF3.5+, Safari3+, Chrome etc)

getajaxmenu:function($, setting){ //function to fetch external page containing the panel DIVs
	var $menucontainer=$('#'+setting.contentsource[0]) //reference empty div on page that will hold menu
	$menucontainer.html("Loading Menu...")
	$.ajax({
		url: setting.contentsource[1], //path to external menu file
		async: true,
		error:function(ajaxrequest){
			$menucontainer.html('Error fetching content. Server Response: '+ajaxrequest.responseText)
		},
		success:function(content){
			$menucontainer.html(content)
			ddsmoothmenu.buildmenu($, setting)
		}
	})
},


buildmenu:function($, setting){
	var smoothmenu=ddsmoothmenu
	var $mainmenu=$("#"+setting.mainmenuid+">ul") //reference main menu UL
	$mainmenu.parent().get(0).className=setting.classname || "ddsmoothmenu"
	var $headers=$mainmenu.find("ul").parent()
	$headers.hover(
		function(e){
			$(this).children('a:eq(0)').addClass('selected')
		},
		function(e){
			$(this).children('a:eq(0)').removeClass('selected')
		}
	)
	$headers.each(function(i){ //loop through each LI header
	    //2010-11-09 - TC: modified/added next 8 lines of code to fix issue where horizontal menu would fall behind vertical menu
	    if (setting.orientation=='h')
	    {
		    var $curobj=$(this).css({zIndex: 9000-i}) //reference current LI header
		}
		else
		{
		    var $curobj=$(this).css({zIndex: 8000-i}) //reference current LI header
		}
		var $subul=$(this).find('ul:eq(0)').css({display:'block'})
		$subul.data('timers', {})
		this._dimensions={w:this.offsetWidth, h:this.offsetHeight, subulw:$subul.outerWidth(), subulh:$subul.outerHeight()}
		this.istopheader=$curobj.parents("ul").length==1? true : false //is top level header?
		$subul.css({top:this.istopheader && setting.orientation!='v'? this._dimensions.h+"px" : 0})
		$curobj.children("a:eq(0)").css(this.istopheader? {paddingRight: smoothmenu.arrowimages.down[2]} : {}).append( //add arrow images
			'<img src="'+ (this.istopheader && setting.orientation!='v'? smoothmenu.arrowimages.down[1] : smoothmenu.arrowimages.right[1])
			+'" class="' + (this.istopheader && setting.orientation!='v'? smoothmenu.arrowimages.down[0] : smoothmenu.arrowimages.right[0])
			+ '" style="border:0;" />'
		)
		if (smoothmenu.shadow.enable && !smoothmenu.css3support){ //if shadows enabled and browser doesn't support CSS3 box shadows
			this._shadowoffset={x:(this.istopheader?$subul.offset().left+smoothmenu.shadow.offsetx : this._dimensions.w), y:(this.istopheader? $subul.offset().top+smoothmenu.shadow.offsety : $curobj.position().top)} //store this shadow's offsets
			if (this.istopheader)
				$parentshadow=$(document.body)
			else{
				var $parentLi=$curobj.parents("li:eq(0)")
				$parentshadow=$parentLi.get(0).$shadow
			}
			this.$shadow=$('<div class="ddshadow'+(this.istopheader? ' toplevelshadow' : '')+'"></div>').prependTo($parentshadow).css({left:this._shadowoffset.x+'px', top:this._shadowoffset.y+'px'})  //insert shadow DIV and set it to parent node for the next shadow div
		}
		$curobj.hover(
			function(e){
				var $targetul=$subul //reference UL to reveal
				var header=$curobj.get(0) //reference header LI as DOM object
				clearTimeout($targetul.data('timers').hidetimer)
				$targetul.data('timers').showtimer=setTimeout(function(){
					header._offsets={left:$curobj.offset().left, top:$curobj.offset().top}
					var menuleft=header.istopheader && setting.orientation!='v'? 0 : header._dimensions.w
					menuleft=(header._offsets.left+menuleft+header._dimensions.subulw>$(window).width())? (header.istopheader && setting.orientation!='v'? -header._dimensions.subulw+header._dimensions.w : -header._dimensions.w) : menuleft //calculate this sub menu's offsets from its parent
					if ($targetul.queue().length<=1){ //if 1 or less queued animations
						$targetul.css({left:menuleft+"px", width:header._dimensions.subulw+'px'}).animate({height:'show',opacity:'show'}, ddsmoothmenu.transition.overtime)
						if (smoothmenu.shadow.enable && !smoothmenu.css3support){
							var shadowleft=header.istopheader? $targetul.offset().left+ddsmoothmenu.shadow.offsetx : menuleft
							var shadowtop=header.istopheader?$targetul.offset().top+smoothmenu.shadow.offsety : header._shadowoffset.y
							if (!header.istopheader && ddsmoothmenu.detectwebkit){ //in WebKit browsers, restore shadow's opacity to full
								header.$shadow.css({opacity:1})
							}
							header.$shadow.css({overflow:'', width:header._dimensions.subulw+'px', left:shadowleft+'px', top:shadowtop+'px'}).animate({height:header._dimensions.subulh+'px'}, ddsmoothmenu.transition.overtime)
						}
					}
				}, ddsmoothmenu.showhidedelay.showdelay)
			},
			function(e){
				var $targetul=$subul
				var header=$curobj.get(0)
				clearTimeout($targetul.data('timers').showtimer)
				$targetul.data('timers').hidetimer=setTimeout(function(){
					$targetul.animate({height:'hide', opacity:'hide'}, ddsmoothmenu.transition.outtime)
					if (smoothmenu.shadow.enable && !smoothmenu.css3support){
						if (ddsmoothmenu.detectwebkit){ //in WebKit browsers, set first child shadow's opacity to 0, as "overflow:hidden" doesn't work in them
							header.$shadow.children('div:eq(0)').css({opacity:0})
						}
						header.$shadow.css({overflow:'hidden'}).animate({height:0}, ddsmoothmenu.transition.outtime)
					}
				}, ddsmoothmenu.showhidedelay.hidedelay)
			}
		) //end hover
	}) //end $headers.each()
	if (smoothmenu.shadow.enable && smoothmenu.css3support){ //(v.1.5) if shadows enabled and browser supports CSS3 shadows
		var $toplevelul=$('#'+setting.mainmenuid+' ul li ul')
		var css3shadow=parseInt(smoothmenu.shadow.offsetx)+"px "+parseInt(smoothmenu.shadow.offsety)+"px 5px #aaa" //construct CSS3 box-shadow value
		var shadowprop=["boxShadow", "MozBoxShadow", "WebkitBoxShadow", "MsBoxShadow"] //possible vendor specific CSS3 shadow properties
		for (var i=0; i<shadowprop.length; i++){
			$toplevelul.css(shadowprop[i], css3shadow)
		}
	}
	$mainmenu.find("ul").css({display:'none', visibility:'visible'})
},

// NMA (TC) - 2011-05-02: entry function to sync smooth menu
sync:
	function (setting)
	{
		// Get meta tag values (page values)
		var blValContentIdStr = $("meta[name=BLMeta_ContentID]").attr("content");
		var blValSiteNodeIdStr = $("meta[name=BLMeta_SiteNodeID]").attr("content");
		
		ddsmoothmenu.syncContentID = (ddsmoothmenu.syncIsNumber(blValContentIdStr)) ? parseInt(blValContentIdStr) : 0;
		ddsmoothmenu.syncSiteNodeIDArray.push(blValSiteNodeIdStr);
		
		// Iterate through the thread to extract the relevant SiteNodeID's that the menu should be synced to
		ddsmoothmenu.syncThread();
		
		// Sync menu
		ddsmoothmenu.syncMenu($("#" + setting.mainmenuid), setting.classname + "_Sync");
	},

// NMA (TC) - 2011-05-02: sync ContentID
syncContentID: undefined,

// NMA (TC) - 2011-04-28: returns whether or not the value is a number
syncIsNumber:
	function (val)
	{
		return (val != undefined && val != null && isNaN(val) == false);
	},

// NMA (TC) - 2011-05-02: processes all menu item links in the current smooth menu and adds the sync CSS class to items that match the page's ContentID and/or a SiteNodeID in the thread
syncMenu:
	function (menu, syncClassName)
	{
		menu.find("a").each(
			function (index)
			{
				// Loop through each list item link
				var href = $(this).attr("href");
				var id, key, keyVal;
				var params = href.split("&");
				var sync = false;

				for (var i = 1; i < params.length; i++)
				{
					// Loop through each param in link (skip first item as it is the PageID part)
					keyVal = params[i].split("=");
					key = keyVal[0];
					id = keyVal[1];
					if (ddsmoothmenu.syncIsNumber(id))
					{
						// ID is a number so proceed
						if (key == "ContentID")
						{
							sync = (parseInt(id) == ddsmoothmenu.syncContentID);	// Set sync flag to whether or not there is a ContentID match in link (if flag was set to true by a SiteNodeID match this should over-ride it as a content item should only be synced by a ContentID match)
							break;													// Always break after a Content link as we don't need to process any more params
						}
						else if (key == "SiteNodeID")
						{
							for (var x = 0; x < ddsmoothmenu.syncSiteNodeIDArray.length; x++)
							{
								// Loop through each SiteNodeID in array
								if (parseInt(id) == parseInt(ddsmoothmenu.syncSiteNodeIDArray[x]))
								{
									// SiteNodeID in array matches the one in the link so sync
									sync = true;
									break;
								}
							}
						}
					}
				}
				if (sync)
				{
					$(this).addClass(syncClassName);
				}
			}			
		);
	},
	
// NMA (TC) - 2011-05-02: sync SiteNodeID array
syncSiteNodeIDArray: new Array(),

// NMA (TC) - 2011-05-02: iterate through the thread to extract the relevant SiteNodeID's that the menu should be synced to
syncThread:
	function ()
	{
		$("div.Thread a").each(
			function (index)
			{
				// Loop through each link in the thread
				var keyVal, params;
				var href = $(this).attr("href");
				var siteNodeId = "0";
								
				if (href.indexOf("SiteNodeID") > -1)
				{
					// Link contains a SiteNodeID param so proceed
					params = href.split("&");					
					for (var i = 1; i < params.length; i++)
					{
						// Loop through each param in link (skip first item as it is the PageID part)
						keyVal = params[i].split("=");
						if (keyVal[0] == "SiteNodeID" && ddsmoothmenu.syncIsNumber(keyVal[1]))
						{
							// Param is a SiteNodeID
							siteNodeId = keyVal[1].toString();
							if (jQuery.inArray(siteNodeId, ddsmoothmenu.syncSiteNodeIDArray) == -1)
							{
								// SiteNodeID not yet added to sync array so do so now
								ddsmoothmenu.syncSiteNodeIDArray.push(siteNodeId);
							}
						}
					}
				}
			}
		);
	},
	
init:function(setting){
	if (typeof setting.customtheme=="object" && setting.customtheme.length==2){ //override default menu colors (default/hover) with custom set?
		var mainmenuid='#'+setting.mainmenuid
		var mainselector=(setting.orientation=="v")? mainmenuid : mainmenuid+', '+mainmenuid
		document.write('<style type="text/css">\n'
			+mainselector+' ul li a {background:'+setting.customtheme[0]+';}\n'
			+mainmenuid+' ul li a:hover {background:'+setting.customtheme[1]+';}\n'
		+'</style>')
	}
	this.shadow.enable=(document.all && !window.XMLHttpRequest)? false : this.shadow.enable //in IE6, always disable shadow	
	jQuery(document).ready(function($){ //ajax menu?
		if (typeof setting.contentsource=="object"){ //if external ajax menu
			ddsmoothmenu.getajaxmenu($, setting)
		}
		else{ //else if markup menu
			ddsmoothmenu.buildmenu($, setting)
		}
	})
	// NMA (TC) - 2011-04-28: add sync .ready
	jQuery(document).ready(
		function ()
		{
			ddsmoothmenu.sync(setting);
		}
	);
}

} //end ddsmoothmenu variable