//** All Levels Navigational Menu- (c) Dynamic Drive DHTML code library: http://www.dynamicdrive.com

//** Script Download/ instructions page: http://www.dynamicdrive.com/dynamicindex1/ddlevelsmenu/

//** Usage Terms: http://www.dynamicdrive.com/notice.htm



//** July 7th, 08'- Creation Date



//** July 16th, 08'- Updated to v 1.3:

	//1) Adds "Side Bar" orientation option. 

	//2) Drop Down Menus now auto adjust their positioning if too close to either right or bottom window edges.

	//3) Enhanced IFRAME shim "coverage" on the page.



//** July 19th, 08'- Updated to v 1.31: Drop down menu now positions at top of window edge if there's neither room downwards or upwards to settle.

//** Aug 13th, 08'- v1.32: Moved "rel" attribute from menu's <li> elements to inner <a>, for validation reasons



//** Sept 10th, 08'- Updated to v 1.4:

	//1) Added optional "sliding" animation when sub menus are revealed.

	//2) Arrow images now dynamically positioned, instead of relying on CSS's "right" property



//** Oct 11th, 08'- Updated to v 1.5:

	//1) Sliding animation behavior tweaked

	//2) Added ability to disable iframeshim, customize speed of sliding animation



//** Dec 23rd, 08'- Updated to v 2.0:

	//1) Animation speed refined to be function of time (ie: 1 sec)

	//2) Added two animations that can be individually enabled/disabled- "slide in" and "fade in".

	//3) Script now automatically moves HTML for all sub menus to the end of the page, to avoid any containership issues if they are nested in other elements.



//** Jan 12, 09'- Updated to v 2.1:

	//1) Added ability to disable the arrow images from the top level items (see option "showarrow")

	//2) For Top Level Menu items containing a SPAN element (for sliding doors technique), arrow images are inserted inside SPAN.



var ddlevelsmenu={



enableshim: true, //enable IFRAME shim to prevent drop down menus from being hidden below SELECT or FLASH elements? (tip: disable if not in use, for efficiency)



arrowpointers:{

	downarrow: ["arrow-down.gif", 11,7], //[path_to_down_arrow, arrowwidth, arrowheight]

	rightarrow: ["arrow-right.gif", 12,12], //[path_to_right_arrow, arrowwidth, arrowheight]

	showarrow: {toplevel: true, sublevel: true} //Show arrow images on top level items and sub level items, respectively?

},

hideinterval: 200, //delay in milliseconds before entire menu disappears onmouseout.

effects: {enableswipe: true, enablefade: true, duration: 500},

httpsiframesrc: "blank.htm", //If menu is run on a secure (https) page, the IFRAME shim feature used by the script should point to an *blank* page *within* the secure area to prevent an IE security prompt. Specify full URL to that page on your server (leave as is if not applicable).



///No need to edit beyond here////////////////////



topmenuids: [], //array containing ids of all the primary menus on the page

topitems: {}, //object array containing all top menu item links

subuls: {}, //object array containing all ULs

lastactivesubul: {}, //object object containing info for last mouse out menu item's UL

topitemsindex: -1,

ulindex: -1,

hidetimers: {}, //object array timer

shimadded: false,

nonFF: !/Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent), //detect non FF browsers

getoffset:function(what, offsettype){

	return (what.offsetParent)? what[offsettype]+this.getoffset(what.offsetParent, offsettype) : what[offsettype]

},



getoffsetof:function(el){

	el._offsets={left:this.getoffset(el, "offsetLeft"), top:this.getoffset(el, "offsetTop")}

},



getwindowsize:function(){

	this.docwidth=window.innerWidth? window.innerWidth-10 : this.standardbody.clientWidth-10

	this.docheight=window.innerHeight? window.innerHeight-15 : this.standardbody.clientHeight-18

},



gettopitemsdimensions:function(){

	for (var m=0; m<this.topmenuids.length; m++){

		var topmenuid=this.topmenuids[m]

		for (var i=0; i<this.topitems[topmenuid].length; i++){

			var header=this.topitems[topmenuid][i]

			var submenu=document.getElementById(header.getAttribute('rel'))

			header._dimensions={w:header.offsetWidth, h:header.offsetHeight, submenuw:submenu.offsetWidth, submenuh:submenu.offsetHeight}

		}

	}

},



isContained:function(m, e){

	var e=window.event || e

	var c=e.relatedTarget || ((e.type=="mouseover")? e.fromElement : e.toElement)

	while (c && c!=m)try {c=c.parentNode} catch(e){c=m}

	if (c==m)

		return true

	else

		return false

},



addpointer:function(target, imgclass, imginfo, BeforeorAfter){

	var pointer=document.createElement("img")

	pointer.src=imginfo[0]

	pointer.style.width=imginfo[1]+"px"

	pointer.style.height=imginfo[2]+"px"

	if(imgclass=="rightarrowpointer"){

		pointer.style.left=target.offsetWidth-imginfo[2]-2+"px"

	}

	pointer.className=imgclass

	var target_firstEl=target.childNodes[target.firstChild.nodeType!=1? 1 : 0] //see if the first child element within A is a SPAN (found in sliding doors technique)

	if (target_firstEl && target_firstEl.tagName=="SPAN"){

		target=target_firstEl //arrow should be added inside this SPAN instead if found

	}

	if (BeforeorAfter=="before")

		target.insertBefore(pointer, target.firstChild)

	else

		target.appendChild(pointer)

},



css:function(el, targetclass, action){

	var needle=new RegExp("(^|\\s+)"+targetclass+"($|\\s+)", "ig")

	if (action=="check")

		return needle.test(el.className)

	else if (action=="remove")

		el.className=el.className.replace(needle, "")

	else if (action=="add" && !needle.test(el.className))

		el.className+=" "+targetclass

},



addshimmy:function(target){

	var shim=(!window.opera)? document.createElement("iframe") : document.createElement("div") //Opera 9.24 doesnt seem to support transparent IFRAMEs

	shim.className="ddiframeshim"

	shim.setAttribute("src", location.protocol=="https:"? this.httpsiframesrc : "about:blank")

	shim.setAttribute("frameborder", "0")

	target.appendChild(shim)

	try{

		shim.style.filter='progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)'

	}

	catch(e){}

	return shim

},



positionshim:function(header, submenu, dir, scrollX, scrollY){

	if (header._istoplevel){

		var scrollY=window.pageYOffset? window.pageYOffset : this.standardbody.scrollTop

		var topgap=header._offsets.top-scrollY

		var bottomgap=scrollY+this.docheight-header._offsets.top-header._dimensions.h

		if (topgap>0){

			this.shimmy.topshim.style.left=scrollX+"px"

			this.shimmy.topshim.style.top=scrollY+"px"

			this.shimmy.topshim.style.width="99%"

			this.shimmy.topshim.style.height=topgap+"px" //distance from top window edge to top of menu item

		}

		if (bottomgap>0){

			this.shimmy.bottomshim.style.left=scrollX+"px"

			this.shimmy.bottomshim.style.top=header._offsets.top + header._dimensions.h +"px"

			this.shimmy.bottomshim.style.width="99%"

			this.shimmy.bottomshim.style.height=bottomgap+"px" //distance from bottom of menu item to bottom window edge

		}

	}

},



hideshim:function(){

	this.shimmy.topshim.style.width=this.shimmy.bottomshim.style.width=0

	this.shimmy.topshim.style.height=this.shimmy.bottomshim.style.height=0

},





buildmenu:function(mainmenuid, header, submenu, submenupos, istoplevel, dir){

	header._master=mainmenuid //Indicate which top menu this header is associated with

	header._pos=submenupos //Indicate pos of sub menu this header is associated with

	header._istoplevel=istoplevel

	if (istoplevel){

		this.addEvent(header, function(e){

		ddlevelsmenu.hidemenu(ddlevelsmenu.subuls[this._master][parseInt(this._pos)])

		}, "click")

	}

	this.subuls[mainmenuid][submenupos]=submenu

	header._dimensions={w:header.offsetWidth, h:header.offsetHeight, submenuw:submenu.offsetWidth, submenuh:submenu.offsetHeight}

	this.getoffsetof(header)

	submenu.style.left=0

	submenu.style.top=0

	submenu.style.visibility="hidden"

	this.addEvent(header, function(e){ //mouseover event

		if (!ddlevelsmenu.isContained(this, e)){

			var submenu=ddlevelsmenu.subuls[this._master][parseInt(this._pos)]

			if (this._istoplevel){

				ddlevelsmenu.css(this, "selected", "add")

			clearTimeout(ddlevelsmenu.hidetimers[this._master][this._pos])

			}

			ddlevelsmenu.getoffsetof(header)

			var scrollX=window.pageXOffset? window.pageXOffset : ddlevelsmenu.standardbody.scrollLeft

			var scrollY=window.pageYOffset? window.pageYOffset : ddlevelsmenu.standardbody.scrollTop

			var submenurightedge=this._offsets.left + this._dimensions.submenuw + (this._istoplevel && dir=="topbar"? 0 : this._dimensions.w)

			var submenubottomedge=this._offsets.top + this._dimensions.submenuh

			//Sub menu starting left position

			var menuleft=(this._istoplevel? this._offsets.left + (dir=="sidebar"? this._dimensions.w : 0) : this._dimensions.w)

			if (submenurightedge-scrollX>ddlevelsmenu.docwidth){

				menuleft+= -this._dimensions.submenuw + (this._istoplevel && dir=="topbar" ? this._dimensions.w : -this._dimensions.w)

			}

			submenu.style.left=menuleft+"px"

			//Sub menu starting top position

			var menutop=(this._istoplevel? this._offsets.top + (dir=="sidebar"? 0 : this._dimensions.h) : this.offsetTop)

			if (submenubottomedge-scrollY>ddlevelsmenu.docheight){ //no room downwards?

				if (this._dimensions.submenuh<this._offsets.top+(dir=="sidebar"? this._dimensions.h : 0)-scrollY){ //move up?

					menutop+= - this._dimensions.submenuh + (this._istoplevel && dir=="topbar"? -this._dimensions.h : this._dimensions.h)

				}

				else{ //top of window edge

					menutop+= -(this._offsets.top-scrollY) + (this._istoplevel && dir=="topbar"? -this._dimensions.h : 0)

				}

			}

			submenu.style.top=menutop+"px"

			if (ddlevelsmenu.enableshim && (ddlevelsmenu.effects.enableswipe==false || ddlevelsmenu.nonFF)){ //apply shim immediately only if animation is turned off, or if on, in non FF2.x browsers

				ddlevelsmenu.positionshim(header, submenu, dir, scrollX, scrollY)

			}

			else{

				submenu.FFscrollInfo={x:scrollX, y:scrollY}

			}

			ddlevelsmenu.showmenu(header, submenu, dir)

		}

	}, "mouseover")

	this.addEvent(header, function(e){ //mouseout event

		var submenu=ddlevelsmenu.subuls[this._master][parseInt(this._pos)]

		if (this._istoplevel){

			if (!ddlevelsmenu.isContained(this, e) && !ddlevelsmenu.isContained(submenu, e)) //hide drop down ul if mouse moves out of menu bar item but not into drop down ul itself

				ddlevelsmenu.hidemenu(submenu)

		}

		else if (!this._istoplevel && !ddlevelsmenu.isContained(this, e)){

			ddlevelsmenu.hidemenu(submenu)

		}



	}, "mouseout")

},



setopacity:function(el, value){

	el.style.opacity=value

	if (typeof el.style.opacity!="string"){ //if it's not a string (ie: number instead), it means property not supported

		el.style.MozOpacity=value

		if (el.filters){

			el.style.filter="progid:DXImageTransform.Microsoft.alpha(opacity="+ value*100 +")"

		}

	}

},



showmenu:function(header, submenu, dir){

	if (this.effects.enableswipe || this.effects.enablefade){

		if (this.effects.enableswipe){

			var endpoint=(header._istoplevel && dir=="topbar")? header._dimensions.submenuh : header._dimensions.submenuw

			submenu.style.width=submenu.style.height=0

			submenu.style.overflow="hidden"

		}

		if (this.effects.enablefade){

			this.setopacity(submenu, 0) //set opacity to 0 so menu appears hidden initially

		}

		submenu._curanimatedegree=0

		submenu.style.visibility="visible"

		clearInterval(submenu._animatetimer)

		submenu._starttime=new Date().getTime() //get time just before animation is run

		submenu._animatetimer=setInterval(function(){ddlevelsmenu.revealmenu(header, submenu, endpoint, dir)}, 10)

	}

	else{

		submenu.style.visibility="visible"

	}

},



revealmenu:function(header, submenu, endpoint, dir){

	var elapsed=new Date().getTime()-submenu._starttime //get time animation has run

	if (elapsed<this.effects.duration){

		if (this.effects.enableswipe){

			if (submenu._curanimatedegree==0){ //reset either width or height of sub menu to "auto" when animation begins

				submenu.style[header._istoplevel && dir=="topbar"? "width" : "height"]="auto"

			}

			submenu.style[header._istoplevel && dir=="topbar"? "height" : "width"]=(submenu._curanimatedegree*endpoint)+"px"

		}

		if (this.effects.enablefade){

			this.setopacity(submenu, submenu._curanimatedegree)

		}

	}

	else{

		clearInterval(submenu._animatetimer)

		if (this.effects.enableswipe){

			submenu.style.width="auto"

			submenu.style.height="auto"

			submenu.style.overflow="visible"

		}

		if (this.effects.enablefade){

			this.setopacity(submenu, 1)

			submenu.style.filter=""

		}

		if (this.enableshim && submenu.FFscrollInfo) //if this is FF browser (meaning shim hasn't been applied yet

			this.positionshim(header, submenu, dir, submenu.FFscrollInfo.x, submenu.FFscrollInfo.y)

	}

	submenu._curanimatedegree=(1-Math.cos((elapsed/this.effects.duration)*Math.PI)) / 2

},



hidemenu:function(submenu){

	if (typeof submenu._pos!="undefined"){ //if submenu is outermost UL drop down menu

		this.css(this.topitems[submenu._master][parseInt(submenu._pos)], "selected", "remove")

		if (this.enableshim)

			this.hideshim()

	}

	clearInterval(submenu._animatetimer)

	submenu.style.left=0

	submenu.style.top="-1000px"

	submenu.style.visibility="hidden"

},





addEvent:function(target, functionref, tasktype) {

	if (target.addEventListener)

		target.addEventListener(tasktype, functionref, false);

	else if (target.attachEvent)

		target.attachEvent('on'+tasktype, function(){return functionref.call(target, window.event)});

},



init:function(mainmenuid, dir){

	this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body

	this.topitemsindex=-1

	this.ulindex=-1

	this.topmenuids.push(mainmenuid)

	this.topitems[mainmenuid]=[] //declare array on object

	this.subuls[mainmenuid]=[] //declare array on object

	this.hidetimers[mainmenuid]=[] //declare hide entire menu timer

	if (this.enableshim && !this.shimadded){

		this.shimmy={}

		this.shimmy.topshim=this.addshimmy(document.body) //create top iframe shim obj

		this.shimmy.bottomshim=this.addshimmy(document.body) //create bottom iframe shim obj

		this.shimadded=true

	}

	var menubar=document.getElementById(mainmenuid)

	var alllinks=menubar.getElementsByTagName("a")

	this.getwindowsize()

	for (var i=0; i<alllinks.length; i++){

		if (alllinks[i].getAttribute('rel')){

			this.topitemsindex++

			this.ulindex++

			var menuitem=alllinks[i]

			this.topitems[mainmenuid][this.topitemsindex]=menuitem //store ref to main menu links

			var dropul=document.getElementById(menuitem.getAttribute('rel'))

			document.body.appendChild(dropul) //move main ULs to end of document

			dropul.style.zIndex=2000 //give drop down menus a high z-index

			dropul._master=mainmenuid  //Indicate which main menu this main UL is associated with

			dropul._pos=this.topitemsindex //Indicate which main menu item this main UL is associated with

			this.addEvent(dropul, function(){ddlevelsmenu.hidemenu(this)}, "click")

			var arrowclass=(dir=="sidebar")? "rightarrowpointer" : "downarrowpointer"

			var arrowpointer=(dir=="sidebar")? this.arrowpointers.rightarrow : this.arrowpointers.downarrow

			if (this.arrowpointers.showarrow.toplevel)

				this.addpointer(menuitem, arrowclass, arrowpointer, (dir=="sidebar")? "before" : "after")

			this.buildmenu(mainmenuid, menuitem, dropul, this.ulindex, true, dir) //build top level menu

			dropul.onmouseover=function(){

				clearTimeout(ddlevelsmenu.hidetimers[this._master][this._pos])

			}

			this.addEvent(dropul, function(e){ //hide menu if mouse moves out of main UL element into open space

				if (!ddlevelsmenu.isContained(this, e) && !ddlevelsmenu.isContained(ddlevelsmenu.topitems[this._master][parseInt(this._pos)], e)){

					var dropul=this

					if (ddlevelsmenu.enableshim)

						ddlevelsmenu.hideshim()

					ddlevelsmenu.hidetimers[this._master][this._pos]=setTimeout(function(){

						ddlevelsmenu.hidemenu(dropul)

					}, ddlevelsmenu.hideinterval)

				}

			}, "mouseout")

			var subuls=dropul.getElementsByTagName("ul")

			for (var c=0; c<subuls.length; c++){

				this.ulindex++

				var parentli=subuls[c].parentNode

				if (this.arrowpointers.showarrow.sublevel)

					this.addpointer(parentli.getElementsByTagName("a")[0], "rightarrowpointer", this.arrowpointers.rightarrow, "before")

				this.buildmenu(mainmenuid, parentli, subuls[c], this.ulindex, false, dir) //build sub level menus

			}

		}

	} //end for loop

	this.addEvent(window, function(){ddlevelsmenu.getwindowsize(); ddlevelsmenu.gettopitemsdimensions()}, "resize")

},



setup:function(mainmenuid, dir){

	this.addEvent(window, function(){ddlevelsmenu.init(mainmenuid, dir)}, "load")

}



}