function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

var myInterval
var x =0 
var active = false
function toonMenu(dir){
 if(!active){
  if(dir=="show"){
   clearInterval(myInterval);
   document.getElementById('topnavigatieuitklapmain').style.display ="";
   document.getElementById('topnavigatieuitklapmain').style.visibility="visible";
   myInterval = setInterval("ExpandMenu();",20);
   active=true
  }else{
   clearInterval(myInterval);
   myInterval = setInterval("ContractMenu();",1);
   active=true
  }
 }
}

function ExpandMenu(){
  if(parseInt(x)>90){
    clearInterval(myInterval);
    active =false
  }else{
	var timer = setTimeout
		document.getElementById('topnavigatieuitklapmain').style.height= x+"px";
		if(parseInt(x)<60){
		    x=parseInt(x)+5;
		}else{
		    x=parseInt(x)+1;
		}
  }
}

function ContractMenu(){
 if(parseInt(x)<10){
  clearInterval(myInterval);
  document.getElementById('topnavigatieuitklapmain').style.display ="none";
  document.getElementById('topnavigatieuitklapmain').style.visibility="hidden";
  active =false
  
 }else{
  document.getElementById('topnavigatieuitklapmain').style.height= x+"px";
//  x=parseInt(x)-5;
    if(parseInt(x)>60){
        x=parseInt(x)-3;
    }else{
        x=parseInt(x)-5;
    }
 }
}