var selected = 0;

function startup(){
	externalLinks();
}

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 toon(target, id) {  
	xmlhttp.open("GET", "getContent.cfm?contentID="+id,true);
	xmlhttp.onreadystatechange=function(){
		if (xmlhttp.readyState==4){            
			document.getElementById(target).innerHTML = xmlhttp.responseText;
		}
	}
	xmlhttp.send(null);
}
    
function hot(item,id){
	// zet alle menuitems terug in de oude kleur
	var i=1
	selected = item;
	for (i=1;i<=5;i++){
	    this.document.getElementById("menuitem"+i).style.background="#ABB7A9";
	}
	// zet aangeklikte menu item aan
	this.document.getElementById(item).style.background="#FFFFFF";
	// toon content aangeklikte menu item
	toon("content",id);
}

function lights_on(item){
	// zet aangeklikte menu item aan
	this.document.getElementById(item).style.background="#FFFFFF";
}
function lights_off(item){
	// zet aangeklikte menu item uit
	if(item != selected){
		this.document.getElementById(item).style.background="#ABB7A9";
	}
}