//Drop Down Tabs Menu- Author: Dynamic Drive (http://www.dynamicdrive.com)
//Created: May 16th, 07'

var tabdropdown={
	disappeardelay: 200, //set delay in miliseconds before menu disappears onmouseout
	disablemenuclick: false, //when user clicks on a menu item with a drop down menu, disable menu item's link?
	enableiframeshim: 1, //1 or 0, for true or false

	//No need to edit beyond here////////////////////////
	dropmenuobj: null, ie: document.all, firefox: document.getElementById&&!document.all, previousmenuitem:null,
	currentpageurl: window.location.href.replace("http://"+window.location.hostname, "").replace(/^\//, ""), //get current page url (minus hostname, ie: http://www.dynamicdrive.com/)

	getposOffset:function(what, offsettype){
		var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
		var parentEl=what.offsetParent;
			while (parentEl!=null){
				totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
				parentEl=parentEl.offsetParent;
			}
		return totaloffset;
	},

	showhide:function(obj, e, obj2){ //obj refers to drop down menu, obj2 refers to tab menu item mouse is currently over
		if (this.ie || this.firefox)
			this.dropmenuobj.style.left=this.dropmenuobj.style.top="-500px"
		if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover"){
			if (obj2.parentNode.className.indexOf("default")==-1) //if tab isn't a default selected one
				obj2.parentNode.className="selected"
			obj.visibility="visible"
			}
		else if (e.type=="click")
			obj.visibility="hidden"
	},

	iecompattest:function(){
		return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
	},

	clearbrowseredge:function(obj, whichedge){
		var edgeoffset=0
		if (whichedge=="rightedge"){
			var windowedge=this.ie && !window.opera? this.standardbody.scrollLeft+this.standardbody.clientWidth-15 : window.pageXOffset+window.innerWidth-15
			this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetWidth
		if (windowedge-this.dropmenuobj.x < this.dropmenuobj.contentmeasure)  //move menu to the left?
			edgeoffset=this.dropmenuobj.contentmeasure-obj.offsetWidth
		}
		else{
			var topedge=this.ie && !window.opera? this.standardbody.scrollTop : window.pageYOffset
			var windowedge=this.ie && !window.opera? this.standardbody.scrollTop+this.standardbody.clientHeight-15 : window.pageYOffset+window.innerHeight-18
			this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetHeight
			if (windowedge-this.dropmenuobj.y < this.dropmenuobj.contentmeasure){ //move up?
				edgeoffset=this.dropmenuobj.contentmeasure+obj.offsetHeight
				if ((this.dropmenuobj.y-topedge)<this.dropmenuobj.contentmeasure) //up no good either?
					edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge
			}
			this.dropmenuobj.firstlink.style.borderTopWidth=(edgeoffset==0)? 0 : "1px" //Add 1px top border to menu if dropping up
		}
		return edgeoffset
	},

	dropit:function(obj, e, dropmenuID){
		if (this.dropmenuobj!=null){ //hide previous menu
			this.dropmenuobj.style.visibility="hidden" //hide menu
			if (this.previousmenuitem!=null && this.previousmenuitem!=obj){
				if (this.previousmenuitem.parentNode.className.indexOf("default")==-1) //If the tab isn't a default selected one
					this.previousmenuitem.parentNode.className=""
			}
		}
		this.clearhidemenu()
		if (this.ie||this.firefox){
			obj.onmouseout=function(){tabdropdown.delayhidemenu(obj)}
			obj.onclick=function(){return !tabdropdown.disablemenuclick} //disable main menu item link onclick?
			this.dropmenuobj=document.getElementById(dropmenuID)
			this.dropmenuobj.onmouseover=function(){tabdropdown.clearhidemenu()}
			this.dropmenuobj.onmouseout=function(e){tabdropdown.dynamichide(e, obj)}
			this.dropmenuobj.onclick=function(){tabdropdown.delayhidemenu(obj)}
			this.showhide(this.dropmenuobj.style, e, obj)
			this.dropmenuobj.x=this.getposOffset(obj, "left")
			this.dropmenuobj.y=this.getposOffset(obj, "top")
			this.dropmenuobj.style.left=this.dropmenuobj.x-this.clearbrowseredge(obj, "rightedge")+"px"
			this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+1+"px"
			this.previousmenuitem=obj //remember main menu item mouse moved out from (and into current menu item)
			this.positionshim() //call iframe shim function
		}
	},

	contains_firefox:function(a, b) {
		while (b.parentNode)
		if ((b = b.parentNode) == a)
			return true;
		return false;
	},

	dynamichide:function(e, obj2){ //obj2 refers to tab menu item mouse is currently over
		var evtobj=window.event? window.event : e
		if (this.ie&&!this.dropmenuobj.contains(evtobj.toElement))
			this.delayhidemenu(obj2)
		else if (this.firefox&&e.currentTarget!= evtobj.relatedTarget&& !this.contains_firefox(evtobj.currentTarget, evtobj.relatedTarget))
			this.delayhidemenu(obj2)
	},

	delayhidemenu:function(obj2){
		this.delayhide=setTimeout(function(){tabdropdown.dropmenuobj.style.visibility='hidden'; if (obj2.parentNode.className.indexOf('default')==-1) obj2.parentNode.className=''},this.disappeardelay) //hide menu
	},

	clearhidemenu:function(){
		if (this.delayhide!="undefined")
			clearTimeout(this.delayhide)
	},

	positionshim:function(){ //display iframe shim function
		if (this.enableiframeshim && typeof this.shimobject!="undefined"){
			if (this.dropmenuobj.style.visibility=="visible"){
				this.shimobject.style.width=this.dropmenuobj.offsetWidth+"px"
				this.shimobject.style.height=this.dropmenuobj.offsetHeight+"px"
				this.shimobject.style.left=this.dropmenuobj.style.left
				this.shimobject.style.top=this.dropmenuobj.style.top
			}
		this.shimobject.style.display=(this.dropmenuobj.style.visibility=="visible")? "block" : "none"
		}
	},

	hideshim:function(){
		if (this.enableiframeshim && typeof this.shimobject!="undefined")
			this.shimobject.style.display='none'
	},

isSelected:function(menuurl){
	var menuurl=menuurl.replace("http://"+menuurl.hostname, "").replace(/^\//, "")
	return (tabdropdown.currentpageurl==menuurl)
},

	init:function(menuid, dselected){
		this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body; //create reference to common "body" across doctypes

		if (document.getElementById(menuid).getElementsByTagName("a").length == 0){
			initpagemenu(document.getElementById(menuid));
		}

		var menuitems=document.getElementById(menuid).getElementsByTagName("a");

		for (var i=0; i<menuitems.length; i++){
			if (menuitems[i].getAttribute("rel")){
				var relvalue=menuitems[i].getAttribute("rel");
				var relmenu = document.getElementById(relvalue);
				
				if (relmenu.getElementsByTagName("a").length == 0){
					inittabmenu(relmenu);
				}

				relmenu.firstlink=relmenu.getElementsByTagName("a")[0];
				menuitems[i].onmouseover=function(e){
					var event=typeof e!="undefined"? e : window.event;
					tabdropdown.dropit(this, event, this.getAttribute("rel"));
				}
			}
			if (dselected=="auto" && typeof setalready=="undefined" && this.isSelected(menuitems[i].href)){
				menuitems[i].parentNode.className+=" selected default";
				var setalready=true;
			}
			else if (parseInt(dselected)==i)
				menuitems[i].parentNode.className+=" selected default";
		}
	}

}

function initpagemenu (pagemenu){
	// To create a dropdown submenu, add a 'rel' attribute to an <a> tag, and use the same attribute value in the inittabmenu function.
	var home_pg = '<li><a href="index.html" title="Home"><span>Home</span></a></li>';
	var hist_pg = '<li><a href="history.html" title="History"><span>Etosha\'s History</span></a></li>';
	var mission_pg = '<li><a href="mission.html" title="Mission"><span>Mission</span></a></li>';
	var sm_dogs_pg = '<li><a href="smalldogs.html" title="Small dogs"><span>Small dogs</span></a></li>';
	var med_dogs_pg = '<li><a href="index.html" title="Medium dogs" rel="med_dog_dropmenu"><span>Medium dogs</span></a></li>';
	var big_dogs_pg = '<li><a href="index.html" title="Big dogs" rel="big_dog_dropmenu"><span>Big dogs</span></a></li>';
	var cats_pg = '<li><a href="cats.html" title="Cats"><span>Cats</span></a></li>';
	var adoption_pg = '<li><a href="adoption.html" title="Adoption form"><span>Adoption form</span></a></li>';
	var support_pg = '<li><a href="support.html" title="Support"><span>Support</span></a></li>';
	var photos_pg = '<li><a href="photos.html" title="Photos"><span>Photos</span></a></li>';
	var memorials_pg = '<li><a href="memorials.html" title="Memorials"><span>Memorials</span></a></li>';
	var links_pg = '<li><a href="links.html" title="Links"><span>Links</span></a></li>';
	var mills_pg = '<li><a href="mills.html" title="Puppy mills"><span>Puppy mills</span></a></li>';
	var spay_pg = '<li><a href="spayneuter.html" title="Spay/neuter"><span>Spay/neuter assistance</span></a></li>';
	var ownership_pg = '<li><a href="ownership.html" title="Ownership"><span>Responsible ownership</span></a></li>';
	var borntodie_pg = '<li><a href="borntodie.html" title="Born to Die"><span>Born to Die</span></a></li>';
	var equines_pg = '<li><a href="equines.html" title="Equines"><span>Equines</span></a></li>';
	var barnyard_pg = '<li><a href="barnyard.html" title="Barnyard pets"><span>Barnyard pets</span></a></li>';
	var linebreak = '<br /><br />';

	var row_1 = home_pg + hist_pg + mission_pg + sm_dogs_pg + med_dogs_pg + big_dogs_pg + cats_pg + equines_pg;
	var row_2 = barnyard_pg + adoption_pg + support_pg + mills_pg + borntodie_pg + spay_pg;
	var row_3 = ownership_pg + photos_pg + memorials_pg + links_pg;

	pagemenu.innerHTML= '<ul>' + row_1 + linebreak + row_2 + linebreak + row_3 + '</ul>';
}

function inittabmenu (menuitem){
	// menuitem IDs must match 'rel' attributes of anchors defined in the initpagemenu function.
	// Link definition
	var aussie_pg = '<a href="aussie.html">Australian Shepherds</a>';
	var basset_pg = '<a href="basset.html">Basset Hounds</a>';
	var beagle_pg = '<a href="beagle.html">Beagles</a>';
	var medmixed_pg = '<a href="medmixed.html">Mixed</a>';

	var blk_tan_pg = '<a href="black&tan.html">Black & tan Hounds</a>';
	var bloodh_pg = '<a href="bloodhound.html">Bloodhounds</a>';
	var blutick_pg = '<a href="bluetick.html">Bluetick Hounds</a>';
	var catahoula_pg = '<a href="catahoula.html">Catahoulas</a>';
	var doberman_pg = '<a href="doberman.html">Dobermans</a>';
	var foxhound_pg = '<a href="foxhound.html">Foxhounds</a>';
	var greyhound_pg = '<a href="greyhound.html">Greyhounds</a>';
	var lab_pg = '<a href="labrador.html">Labrador Retrievers</a>';
	var mastiff_pg = '<a href="mastiff.html">Mastiffs</a>';
	var pointer_pg = '<a href="pointer.html">Pointers</a>';
	var redbone_pg = '<a href="redbone.html">Redbone Hounds</a>';
	var ridgie_1_pg = '<a href="ridgeback.html">Rhodesian Ridgebacks 1</a>';
	var ridgie_2_pg = '<a href="ridgeback2.html">Rhodesian Ridgebacks 2</a>';
	var walker_pg = '<a href="walker.html">Walker Hounds</a>';
	var largemix_pg = '<a href="largemix.html">Mixed</a>';
	
	// Menu definitions
	if (menuitem.getAttribute('id') == 'med_dog_dropmenu'){
		menuitem.innerHTML= aussie_pg + basset_pg + beagle_pg + medmixed_pg;
	}
	else if (menuitem.getAttribute('id') == 'big_dog_dropmenu'){
		menuitem.innerHTML = blk_tan_pg + bloodh_pg + blutick_pg + catahoula_pg + doberman_pg + foxhound_pg + greyhound_pg + lab_pg + mastiff_pg + pointer_pg + redbone_pg + ridgie_1_pg + ridgie_2_pg + walker_pg + largemix_pg;
	}
}