//** 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

//** Current version: 2.2 See changelog.txt for details

if (typeof dd_domreadycheck=="undefined") //global variable to detect if DOM is ready
var dd_domreadycheck=false

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: ["", 0,0], //[path_to_down_arrow, arrowwidth, arrowheight]
rightarrow: ["", 0,0], //[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: 200},
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)});
},

domready:function(functionref){ //based on code from the jQuery library
if (dd_domreadycheck){
functionref()
return
}
// Mozilla, Opera and webkit nightlies currently support this event
if (document.addEventListener) {
// Use the handy event callback
document.addEventListener("DOMContentLoaded", function(){
document.removeEventListener("DOMContentLoaded", arguments.callee, false )
functionref();
dd_domreadycheck=true
}, false )
}
else if (document.attachEvent){
// If IE and not an iframe
// continually check to see if the document is ready
if ( document.documentElement.doScroll && window == window.top) (function(){
if (dd_domreadycheck){
functionref()
return
}
try{
// If IE is used, use the trick by Diego Perini
// http://javascript.nwbox.com/IEContentLoaded/
document.documentElement.doScroll("left")
}catch(error){
setTimeout( arguments.callee, 0)
return;
}
//and execute any waiting functions
functionref();
dd_domreadycheck=true
})();
}
if (document.attachEvent && parent.length>0) //account for page being in IFRAME, in which above doesn't fire in IE
this.addEvent(window, function(){functionref()}, "load");
},


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.domready(function(){ddlevelsmenu.init(mainmenuid, dir)})
}

}