/*                                                         *\
   +-------------------ARTSVISUAL------------------------+
   |                                                     |
   |    Project:   KAPS menu                             |
   |       File:  menu.                                  |
   |  Copyright:  2008 Artsvisual LTD                    |
   |                                                     |
   +-----------------------------------------------------+
\*                                                         */

	var tabdropdown={
		disappeardelay: 200, 
		disablemenuclick: false, 
		enableiframeshim: 1, 
		dropmenuobj: null, ie: document.all, firefox: document.getElementById&&!document.all, previousmenuitem:null,
		currentpageurl: window.location.href.replace("http://"+window.location.hostname, "").replace(/^\//, ""),
		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){ 
			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) 
					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)  
				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){ 
					edgeoffset=this.dropmenuobj.contentmeasure+obj.offsetHeight
					if ((this.dropmenuobj.y-topedge)<this.dropmenuobj.contentmeasure) 
						edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge
				}
				this.dropmenuobj.firstlink.style.borderTopWidth=(edgeoffset==0)? 0 : "1px" 
			}
			return edgeoffset
		},
		dropit:function(obj, e, dropmenuID){
			if (this.dropmenuobj!=null){ 
				this.dropmenuobj.style.visibility="hidden" 
				if (this.previousmenuitem!=null && this.previousmenuitem!=obj){
					if (this.previousmenuitem.parentNode.className.indexOf("default")==-1) 
						this.previousmenuitem.parentNode.className=""
				}
			}
			this.clearhidemenu()
			if (this.ie||this.firefox){
				obj.onmouseout=function(){tabdropdown.delayhidemenu(obj)}
				obj.onclick=function(){return !tabdropdown.disablemenuclick} 
				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 
				this.positionshim() 
			}
		},
		contains_firefox:function(a, b) {
			while (b.parentNode)
			if ((b = b.parentNode) == a)
				return true;
			return false;
		},

		dynamichide:function(e, obj2){ 
			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) 
		},

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

		positionshim: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 
			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")
					document.getElementById(relvalue).firstlink=document.getElementById(relvalue).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"
			}
		}

	}