function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
       anchor.target = "_blank";
 }
}

function changeClass(en,cn) {
if(!document.getElementById) return;
var element = document.getElementById(en);	
	element.className = cn;
}


searchUrl = function() {
	if (location.search){
		var vals=location.search.substr(1).split("/");
		var request= new Array();
	
		for (var i in vals) {
			vals[i] = vals[i].replace(/\+/g, " ").split("/");
			//request[unescape(vals[i][0])] =unescape(vals[i][1]);
		}
	
	return vals[0];
	
	}
	return 'algemeen';
}


addClass = function() {
	if (document.getElementById) {
	
			id = searchUrl();
	
			page = document.getElementById(id);
			
			if(page){
			page.className+=" on";
			}else{
			page = document.getElementById('algemeen');
			page.className+=" on";
			}
			
		navRoot = document.getElementById("nav");
		for (i=0; i<navRoot.childNodes.length; i++) {
		node = navRoot.childNodes[i];
			if (node.nodeName=="LI") {
			
			node.onmouseover=function() {
			this.className+=" on";
			
			id = searchUrl();
			
			page = document.getElementById(id);
			
			page.className=page.className.replace(" on", "");
			
			}
			node.onmouseout=function() {
			this.className=this.className.replace(" on", "");
			
			id = searchUrl();
			
			
			page = document.getElementById(id);
			page.className+=" on";
			

			}
			
			}
		}
	}
}

window.onload = function(){ 
  externalLinks()
  addClass();
}