var ddlevelsmenuadmin = {
	downarrowpointer_adminmenu: ["ddlevelsfiles/arrow-down.gif", 11,7],
	rightarrowpointer_admin: ["ddlevelsfiles/arrow-right.gif", 12,12],
	hideinterval: 0,
	revealanimate: false,
	/*httpsiframesrc: "blank.html",*/
	topmenuids: [],
	topitems: {},
	subuls: {},
	topitemsindex: -1,
	ulindex: -1,
	hidetimers: {},
	shimadded: false,
	isff3orabove: /Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent) && RegExp.$1>=3,
	ieVersion: false,
	
	getoffset: function(what, offsettype) {
		var offset = 0;
		p = what.offsetParent;
		while (p && p != this.standardbody) {
			offset += offsettype == "offsetTop" ? p.offsetTop : p.offsetLeft;
			p = p.offsetParent;
		}
		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'));
				if (submenu) {
					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;
			}
		}
		return c == m;
	},
	
	addpointer: function(target, imgclass, imginfo) {
		var pointer = document.createElement("img");
		pointer.src = imginfo[0];
		pointer.style.width = imginfo[1] + "px";
		pointer.style.height = imginfo[2] + "px";
		pointer.style.left = target.offsetWidth - imginfo[2] - 2 + "px";
		pointer.className = imgclass;
		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");
		shim.className = "ddiframeshim_admin";
		shim.setAttribute("src", location.protocol == "https:" ? this.httpsiframesrc : "about:blank");
		shim.setAttribute("frameborder", "0");
		target.appendChild(shim);
		shim.style.position = "absolute";
		shim.style.left = "-5000px";
		shim.style.top = "-5000px";
		shim.style.display = "none";
		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";
			}
			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";
			}
		}
	},
	
	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;
		header._pos = submenupos;
		header._istoplevel = istoplevel;
		if (istoplevel) {
			this.addEvent(header, function(e) {
				ddlevelsmenuadmin.hidemenu(ddlevelsmenuadmin.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) {
			if (!ddlevelsmenuadmin.isContained(this, e)) {
				if (typeof ddlevelsmenuadmin.hidetimers[this._master][parseInt(this._pos)] != "undefined") {
					clearTimeout(ddlevelsmenuadmin.hidetimers[this._master][parseInt(this._pos)]);
				}
				if (this._istoplevel) {
					ddlevelsmenuadmin.css(this, "selected", "add");
				}
				var submenu = ddlevelsmenuadmin.subuls[this._master][parseInt(this._pos)];
				ddlevelsmenuadmin.getoffsetof(header);
				var scrollX = window.pageXOffset ? window.pageXOffset : ddlevelsmenuadmin.standardbody.scrollLeft;
				var scrollY = window.pageYOffset ? window.pageYOffset : ddlevelsmenuadmin.standardbody.scrollTop;
				p = submenu.parentNode;
				scr = 0;
				while (p && p.nodeName.toLowerCase() != "body") {
					scr += p.scrollTop;
					p = p.parentNode;
				}
				p = submenu.offsetParent;
				var off = 0;
				while (p && p.nodeName.toLowerCase() != "body") {
					off += p.offsetTop;
					p = p.offsetParent;
				}
				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 > ddlevelsmenuadmin.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 (this._istoplevel && document.all) menutop -= off;
				if (!document.all || (document.all && this.ieVersion >= 7)) menutop -= scr;
				
				if (submenubottomedge - scrollY > ddlevelsmenuadmin.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 (ddlevelsmenuadmin.revealanimate == false || ddlevelsmenuadmin.isff3orabove){
					//apply shim immediately only if animation is turned off, or if on, in non FF2.x browsers
					ddlevelsmenuadmin.positionshim(header, submenu, dir, scrollX, scrollY);
				} else{
					submenu.ff2scrollInfo = {x:scrollX, y:scrollY};
				}
				ddlevelsmenuadmin.showmenu(header, submenu, dir);
			}
		}, "mouseover");
		this.addEvent(header, function(e) {
			//mouseout event
			if (this._istoplevel) {
				var submenu = ddlevelsmenuadmin.subuls[this._master][parseInt(this._pos)];
				if (!ddlevelsmenuadmin.isContained(this, e) && !ddlevelsmenuadmin.isContained(submenu, e)) {
					//hide drop down ul if mouse moves out of menu bar item but not into drop down ul itself
					ddlevelsmenuadmin.hidemenu(submenu);
				}
			} else if (!this._istoplevel && !ddlevelsmenuadmin.isContained(this, e)) {
				var headerlist = this;
				ddlevelsmenuadmin.hidetimers[this._master][parseInt(this._pos)] = setTimeout(function() {
					var submenu = ddlevelsmenuadmin.subuls[headerlist._master][parseInt(headerlist._pos)];
					ddlevelsmenuadmin.hidemenu(submenu);
				}, ddlevelsmenuadmin.hideinterval);
			}
		}, "mouseout");
	},
	
	showmenu: function(header, submenu, dir) {
		if (this.revealanimate) {
			submenu._curanimatepoint = 0;
			var endpoint = (header._istoplevel && dir == "topbar") ? submenu.offsetHeight : submenu.offsetWidth;
			submenu.style.width = submenu.style.height = 0;
			submenu.style.overflow = "hidden";
			clearTimeout(submenu._animatetimer);
			submenu._animatetimer = setInterval(function(){
				ddlevelsmenuadmin.revealmenu(header, submenu, endpoint, dir);
			}, 10);
		}
		submenu.style.zIndex = 200000;
		
		//submenu.style.border = "solid black 1px";
		submenu.style.visibility = "visible";
	},
	
	revealmenu: function(header, submenu, endpoint, dir) {
		if (submenu._curanimatepoint < endpoint) {
			if (submenu._curanimatepoint==0){ 
				//reset either width or height of sub menu to "auto" when animation begins
				submenu.style[header._istoplevel && dir == "topbar" ? "width" : "height"] = "auto";
			}
			submenu._curanimatepoint = submenu._curanimatepoint + 5 + (submenu._curanimatepoint/10);
			submenu.style[header._istoplevel && dir == "topbar" ? "height" : "width"] = submenu._curanimatepoint + "px";
		} else {
			if (submenu.ff2scrollInfo) {
				//if this is FF2 or below (meaning shim hasn't been applied yet
				this.positionshim(header, submenu, dir, submenu.ff2scrollInfo.x, submenu.ff2scrollInfo.y);
			}
			submenu.style[header._istoplevel && dir == "topbar" ? "height" : "width"] = "auto";
			submenu.style.overflow = "visible";
			clearInterval(submenu._animatetimer);
		}
	},
	
	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");
			this.hideshim();
		}
		clearTimeout(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 array on object
		if (!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'));
				if (dropul) {
					dropul.style.zIndex = 200000; //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(){ddlevelsmenuadmin.hidemenu(this)}, "click")
					var arrowpointer = (dir == "sidebar") ? "rightarrowpointer_admin" : "downarrowpointer_adminmenu";

					//this.addpointer(menuitem, arrowpointer, this[arrowpointer])
					this.buildmenu(mainmenuid, menuitem, dropul, this.ulindex, true, dir); //build top level menu
					//dropul.onmouseover=function(){
						//do nothing
					//}
					this.addEvent(dropul, function(e) {
						//hide menu if mouse moves out of main UL element into open space
						if (!ddlevelsmenuadmin.isContained(this, e) && !ddlevelsmenuadmin.isContained(ddlevelsmenuadmin.topitems[this._master][parseInt(this._pos)], e)) {
							var dropul = this;
							ddlevelsmenuadmin.hidetimers[this._master][parseInt(this._pos)] = setTimeout(function() {
								ddlevelsmenuadmin.hidemenu(dropul);
							}, ddlevelsmenuadmin.hideinterval);
						}
					}, "mouseout");
					var subuls = dropul.getElementsByTagName("ul");
					for (var c = 0; c < subuls.length; c++){
						this.ulindex++;
						var parentli = subuls[c].parentNode;
						//this.addpointer(parentli.getElementsByTagName("a")[0], "rightarrowpointer_admin", this.rightarrowpointer_admin)
						this.buildmenu(mainmenuid, parentli, subuls[c], this.ulindex, false, dir); //build sub level menus
					}
				}
			}
		} //end for loop
		this.addEvent(window, function() {
			ddlevelsmenuadmin.getwindowsize();
			ddlevelsmenuadmin.gettopitemsdimensions()
		}, "resize");
		
		if (document.all) {
			if (navigator.appVersion.indexOf("MSIE") != -1) {
				this.ieVersion = parseFloat(navigator.appVersion.split("MSIE")[1]);
			}
		}
	},
	
	setup: function(mainmenuid, dir) {
		this.addEvent(window, function() {
			ddlevelsmenuadmin.init(mainmenuid, dir);
		}, "load");
	}
}

var ddlevelsmenu = ddlevelsmenuadmin;