document.body.innerHTML = document.body.innerHTML + "<a href=\"/default.aspx\" target=\"_self\" style=\"position:absolute; top: 18px; left: 232px; border-width: 0px;\"><img src=\"/images/structuur/homebutton.jpg\" id=\"homebutton\" style=\"border-width: 0px;\" alt=\"Home\"/></a>";

//Drop Down Tabs Menu- Author: Dynamic Drive (http://www.dynamicdrive.com)
//Created: May 16th, 07'
//Customised: March 2010. Customisations can be found by searching for 'ADDED'
// om quirksmode / strictmode te vinden: paste dit in de address bar: 'window.alert(document.compatMode)' css1compat is standards mode andere backcompat is quirks

var tabdropdown={
	disappeardelay: 200, //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?
	enableiframeshim: 1, //1 or 0, for true or false
	hovercolor: '#dddddd', normalcolor: 'black',	

	//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
			this.previousmenuitem.style.color = this.normalcolor; //ADDED: THIS IS JUST TO CUSTOMIZE MY OWN MENU!
			// FOR COMPATIBILITY WITH IE8-: DON'T USE 'inherit' AS A color VALUE!!
	
			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+"px";
			//window.alert('x:' + this.dropmenuobj.x + '\ny:' + this.dropmenuobj.y + '\nleft:' + this.dropmenuobj.style.left + '\ntop:' +this.dropmenuobj.style.top);
			this.previousmenuitem=obj; //remember main menu item mouse moved out from (and into current menu item)
			this.positionshim(); //call iframe shim function
		}
	},
	//ADDED: submenu from left to right
	shiftit:function(obj, e, dropmenuID){
		if (this.dropmenuobj!=null){ //hide previous menu
			this.dropmenuobj.style.visibility="hidden"; //hide menu
			
			this.previousmenuitem.style.color = this.normalcolor; //ADDED: THIS IS JUST TO CUSTOMIZE MY OWN 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")+ obj.offsetWidth +"px"; 
			this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, "bottomedge")+"px";
			
			obj.style.color  = this.hovercolor; //ADDED: THIS IS JUST TO CUSTOMIZE MY OWN MENU!
			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){ // ADDED: tabdropdown.previousmenuitem.style.color = normalcolor for personal needs.
		
		this.delayhide=setTimeout(function(){tabdropdown.dropmenuobj.style.visibility='hidden'; tabdropdown.previousmenuitem.style.color = tabdropdown.normalcolor; 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
		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"
		}
	}*/
	
	/*  ADDED: replaces the old init function (stated just above)
		dropstyle is a string: either 'topdown' or 'leftright' 
		classNaam is the classname of the elements inside the container that are submenus
		menuid is the id of the container that contains the menu
	*/	
	init:function(menuid, classNaam,dropstyle,dselected){
		this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body; //create reference to common "body" across doctypes
		var obj = document.getElementById(menuid);
		var menuitems=obj.getElementsByTagName("div");
		for (var i=0; i<menuitems.length; i++){
			if(menuitems[i].className == classNaam){
				if (menuitems[i].innerHTML){
					var temp = menuitems[i].getElementsByTagName("p")[0];
					var relvalue=temp.innerHTML+"_submenu";
					if(document.getElementById(relvalue)){
						document.getElementById(relvalue).firstlink=document.getElementById(relvalue).getElementsByTagName("a")[0];
						if(dropstyle == "topdown"){
							menuitems[i].onmouseover=function(e){
								var event=typeof e!="undefined"? e : window.event;
								tabdropdown.dropit(this, event, this.getElementsByTagName("p")[0].innerHTML+"_submenu");
							}
						}
						else if(dropstyle == "leftright"){
							menuitems[i].onmouseover=function(e){
								var event=typeof e!="undefined"? e : window.event;
								tabdropdown.shiftit(this, event, this.getElementsByTagName("p")[0].innerHTML+"_submenu");
							}
						}							
					}
				}
				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";
			}
		}
	}

}


createMenuItems();
tabdropdown.init("menubovencontainer", "tabmenuboven", "topdown");