function initNavigation() {
  var ua = navigator.userAgent;
  var items = [];
  for (var n = document.getElementById("nav-main").getElementsByTagName("ul")[0].firstChild; n; n = n.nextSibling) {
    if (n.nodeType == 1) items[items.length] = n;
  }
  if ((ua.indexOf("MSIE 5") > -1 || ua.indexOf("MSIE 6") > -1) && ua.indexOf("Opera") == -1) {
    for (var i in items) {
      var n = items[i];
      n.onmouseover = function() {
        this.className = (this.className.indexOf("selected") > -1) ? "selected hover" : "hover";
      };
      n.onmouseout = function() {
        this.className = (this.className.indexOf("selected") > -1) ? "selected" : "";
      };
    }
  }
  for (var i in items) {
    var n = items[i];
    var as = n.getElementsByTagName("a");
    for (var i = 0; i < as.length; i++) {
      var a = as[i];
      a.mainParent = n;
      a.onfocus = function() {
        this.mainParent.className = (this.mainParent.className.indexOf("selected") > -1) ? "selected hover" : "hover";
      };
      a.onblur = function() {
        this.mainParent.className = (this.mainParent.className.indexOf("selected") > -1) ? "selected" : "";
      };
    }
  }
}

var setExternalLinks = function(){
  var localDomain = (location.href.split('/')[2]);
  var list = document.getElementsByTagName('A');
  for (var i = 0; i < list.length; i++){
    var aEl = list[i];
    if (aEl.href.split('/')[2] != localDomain && aEl.href.indexOf('mailto:') == -1){
      aEl.onclick = function(){
        window.open(this.href);
        return false;
      }
    }
  }
}
var win = null;
var name = "Effenaar"
	function loadWin(url,w,h){
	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	settings =	'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars=0,resizable=0';
	win = window.open(url,name,settings)
	}
window.onload = function() {
  initNavigation();
  setExternalLinks();
};