//Drop Down Tab Menu- Author: Dynamic Drive (http://www.dynamicdrive.com)
//Created/ updated: October 23rd, 06'

var _activeImg = -1;

function reset_image(){
	/*if (_activeImg == -1) return;
	var tab = document.getElementById("all_img_" + _activeImg);
	tab.src = "./../images/dropindicate.gif";
	_activeImg = -1;*/
}

function ensureTab(dropmenuID){
	//reset_image();
	//alert(dropmenuID);
	
	if (dropmenuID == "sub_dropmenu"){
		return;
	}

	if (dropmenuID == "dropmenu"){
		var tab = document.getElementById("all_img_0");
		_activeImg = 0;

	}else if (dropmenuID == "dropmenu1"){
		var tab = document.getElementById("all_img_1");
		_activeImg = 1;

	}else if (dropmenuID == "dropmenu2"){
		var tab = document.getElementById("all_img_2");
		_activeImg = 2;

	}else if (dropmenuID == "dropmenu3"){
		var tab = document.getElementById("all_img_3");
		_activeImg = 3;

	}else if (dropmenuID == "dropmenu4"){
		var tab = document.getElementById("all_img_4");
		_activeImg = 4;

	}else if (dropmenuID == "dropmenu5"){
		var tab = document.getElementById("all_img_5");
		_activeImg = 5;

	}
	tab.src = "./../images/dropindicate_white.gif";
}

var tabdropdown={
	disappeardelay: 250, //set delay in miliseconds before menu disappears onmouseout
	disablemenuclick: true, //when user clicks on a menu item with a drop down menu, disable menu item's link?
	
	/*downsymbol0: '<img id=\"all_img_0\" src="./../images/dropindicate.gif" style="border: 0; padding-left: 5px" />', //HTML "symbol" to use to indicate this is a dropdown menu item. Enter ('') to disable.
	downsymbol1: '<img id=\"all_img_1\" src="./../images/dropindicate.gif" style="border: 0; padding-left: 5px" />', //HTML "symbol" to use to indicate this is a dropdown menu item. Enter ('') to disable.
	downsymbol2: '<img id=\"all_img_2\" src="./../images/dropindicate.gif" style="border: 0; padding-left: 5px" />', //HTML "symbol" to use to indicate this is a dropdown menu item. Enter ('') to disable.
	downsymbol3: '<img id=\"all_img_3\" src="./../images/dropindicate.gif" style="border: 0; padding-left: 5px" />', //HTML "symbol" to use to indicate this is a dropdown menu item. Enter ('') to disable.
	downsymbol4: '<img id=\"all_img_4\" src="./../images/dropindicate.gif" style="border: 0; padding-left: 5px" />', //HTML "symbol" to use to indicate this is a dropdown menu item. Enter ('') to disable.
	downsymbol5: '<img id=\"all_img_5\" src="./../images/dropindicate.gif" style="border: 0; padding-left: 5px" />', //HTML "symbol" to use to indicate this is a dropdown menu item. Enter ('') to disable.
*/
	//No need to edit beyond here////////////////////////
	dropmenuobj: null, ie: document.all, firefox: document.getElementById&&!document.all, previousmenuitem:null,

	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.iecompattest().scrollLeft+this.iecompattest().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.iecompattest().scrollTop : window.pageYOffset
			var windowedge=this.ie && !window.opera? this.iecompattest().scrollTop+this.iecompattest().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.style.borderTopWidth=(edgeoffset==0)? 0 : "1px" //Add 1px top border to menu if dropping up
		}
		return edgeoffset
	},
	
	dropit:function(obj, e, dropmenuID){

		
		//hide previous menu
		if (this.dropmenuobj!=null && dropmenuID != "sub_dropmenu"){ 
			//alert("hiding");
			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=""
				tabdropdown.togglehiddenobj(this.previousmenuitem, 'visible')
			}
		}
		//ensureTab(dropmenuID);
		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")
			//alert(this.dropmenuobj.x)
			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+"px"
			this.previousmenuitem=obj //remember main menu item mouse moved out from (and into current menu item)
			tabdropdown.togglehiddenobj(obj, "hidden") //Hide (form) object drop down menu overlaps, if any
		}
	},

	togglehiddenobj:function(obj2, visible){
		var revvalue=obj2.getAttribute("rev")
		if (typeof revvalue=="string" && revvalue.length>0 && document.getElementById(revvalue)!=null)
		document.getElementById(revvalue).style.visibility=visible
	},

	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
		/////alert("dynmaic_hide");
		//reset_image();
		
		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=''; tabdropdown.togglehiddenobj(obj2, 'visible')},this.disappeardelay) //hide menu
	},

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

	initializetabmenu:function(menuid, opt_selectedmenuitem){

		var menuitems=document.getElementById(menuid).getElementsByTagName("a")
		for (var i=0; i<menuitems.length; i++){
			if (parseInt(opt_selectedmenuitem)==i)
			menuitems[i].parentNode.className+=" selected default"
			if (menuitems[i].getAttribute("rel")){
				var relvalue=menuitems[i].getAttribute("rel")
				menuitems[i].onmouseover=function(e){
					var event=typeof e!="undefined"? e : window.event
					tabdropdown.dropit(this, event, this.getAttribute("rel"))
				}
				//if (tabdropdown.downsymbol!="")
				/*if (i == 0){
					menuitems[i].innerHTML+=tabdropdown.downsymbol0;					
				}else if (i == 1){
					menuitems[i].innerHTML+=tabdropdown.downsymbol1;					
				}else if (i == 2){
					menuitems[i].innerHTML+=tabdropdown.downsymbol2;					
				}else if (i == 3){
					menuitems[i].innerHTML+=tabdropdown.downsymbol3;					
				}else if (i == 4){
					menuitems[i].innerHTML+=tabdropdown.downsymbol4;					
				}else if (i == 5){
					menuitems[i].innerHTML+=tabdropdown.downsymbol5;
				}*/
				 //Add symbol HTML to menu item's.
			}
		}
		
		/*var menuSubItem = document.getElementById('subMenu_generator');
		if (menuSubItem.getAttribute("rel")){
				if (parseInt(opt_selectedmenuitem)==i)
				menuSubItem.parentNode.className+=" selected default"			
				var relvalue = menuSubItem.getAttribute("rel")
				menuSubItem.onmouseover=function(e){
					var event=typeof e!="undefined"? e : window.event
					tabdropdown.dropit(this, event, this.getAttribute("rel"))
				}

		}*/
	}

}