var PageHoogte = 0;
var StartOffset = 103; // verticale begin positie van de layer
var Place = PageHoogte + StartOffset;
var windHeight = 0;
var agt=navigator.userAgent.toLowerCase();
var is_major = parseInt(navigator.appVersion);
var is_minor = parseFloat(navigator.appVersion);
var s = 0
var Dawidth = 450
var Daheigth = 450


is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
			&& (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
			&& (agt.indexOf('webtv')==-1));
is_nav2 = (is_nav && (is_major == 2));
is_nav3 = (is_nav && (is_major == 3));
is_nav4 = (is_nav && (is_major == 4));
is_nav4up = (is_nav && (is_major >= 4));
is_nav5 = (is_nav && (is_major == 5));
is_nav5up = (is_nav && (is_major >= 5));

is_ie = (agt.indexOf("msie") != -1);
is_ie3 = (is_ie && (is_major < 4));
is_ie4 = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")==-1) );
is_ie4up = (is_ie  && (is_major >= 4));
is_ie5 = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
is_ie5up = (is_ie  && !is_ie3 && !is_ie4);

function isUnix()
	{
		return (navigator.appVersion.indexOf("X11") != -1)
	}

// script om een browserwaarschuwing te plaatsen in image onder het logo
function warning(){
	if(is_ie4up){
		document.GifWarning.src = "/images/basis/subber.gif";
		}	
	else{
		var rollImage = new Image();
		rollImage.src = "/images/basis/subber.gif"; 
		document.images[2].src = rollImage.src;
		//document.GifWarning.src = "/images/basis/subber.gif"
	}
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() 
{ //v3.0
	var i,x,a=document.MM_sr; 
	for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) 
		x.src=x.oSrc;
}

function MM_findObj(n, d) 
{ //v4.0
	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 && document.getElementById) 
		x=document.getElementById(n); 
	
	return x;
}

function MM_swapImage() 
{ //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; 
  document.MM_sr=new Array; 
  for(i=0;i<(a.length-2);i+=3)
	if ((x=MM_findObj(a[i]))!=null)
			{
   				document.MM_sr[j++]=x; 
				if(!x.oSrc) 
					x.oSrc=x.src; 
				x.src = a[i+2];
			}
}

// script om navigatie menu (mainnav) te laten scrollen
function placer(){
	if(is_ie4up) 
		{ 
			PageHoogte = document.body.scrollTop;
			LayerOffset = document.all.mainnav.style.pixelTop;
			windHeight = document.body.clientHeight;
			
		}
		
		if(is_nav4) 
		{ 
			PageHoogte = self.pageYOffset;
			LayerOffset = document.mainnav.top;
			windHeight = window.innerHeight;
			//alert (LayerOffset);
		}
		if(is_ie5) 
		{ 
			PageHoogte = document.body.scrollTop;
			LayerOffset = s;
			windHeight = document.body.clientHeight;
			
		}
		if(is_nav5) 
		{ 
			PageHoogte = window.pageYOffset-1;
			LayerOffset = s;
			windHeight = window.innerHeight;
		}
		Place = PageHoogte + StartOffset;
		DiffY = Place - LayerOffset;
		
			if (DiffY != 0 && windHeight > 300){	
					placing = .2 * (Place - LayerOffset);//alert(PageHoogte);
					if(placing > 0) placing = Math.ceil(placing);
					else placing = Math.floor(placing);
					if(is_ie4) document.all.mainnav.style.pixelTop += placing;
					if(is_nav4) {document.mainnav.top += placing;}
					if(is_ie5||is_nav5)
						{
							s = s + 1
							s = parseInt(s) + placing
							document.getElementById('mainnav').style.top = s + "px"
						}
				}
			
}

// start de setinterval om navigatie menu te laten scrollen
function starter(){
	setInterval("placer()",10);
	//warning();
}

function MM_showHideLayers() { //v3.0
  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 dateline1,dateline2;

function home_date() {
	date = new Date();    
	var day_number = date.getDay();    
	var todays_date = date.getDate();   
	var month_number = date.getMonth();    
	var year = date.getYear();    
	var day_name = '';    
	var month_name = '';  
		if(year ==101){year = 2001;}
		if(year ==102){year = 2002;} 
		if(year ==103){year = 2003;} 
		if(year ==104){year = 2004;} 
		if(year ==105){year = 2005;}    
		if(day_number == 0)	{day_name = 'Sunday';}    
		if(day_number == 1)	{day_name = 'Monday';}   
		if(day_number == 2){day_name = 'Tuesday';}    
		if(day_number == 3){day_name = 'Wensday';}    
		if(day_number == 4){day_name = 'Thursday';}    
		if(day_number == 5){day_name = 'Friday';}    
		if(day_number == 6){day_name = 'Saturday';}    
		if(month_number == 0){month_name = 'January';}    
		if(month_number == 1){month_name = 'February';}    
		if(month_number == 2){month_name = 'March';}    
		if(month_number == 3){month_name = 'April';}    
		if(month_number == 4){month_name = 'Mai';}     
		if(month_number == 5){month_name = 'June';}    
		if(month_number == 6){month_name = 'July';}    
		if(month_number == 7){month_name = 'August';}   
		if(month_number == 8){month_name = 'September';}    
		if(month_number == 9){month_name = 'October';}    
		if(month_number == 10){month_name = 'November';}   
		if(month_number == 11){month_name ='December';}  
		dateline1 = day_name + ' ' + todays_date + ' ' ;
		dateline2 = month_name + ' ' + year + ' ';  
		if (document.layers) 
		{
   			layerRef = document.layers["mainnav"].document;
   			layerRef.open();
   			layerRef.write('' + dateline1 + '');
   			layerRef.write('' + dateline2 + '');
			layerRef.close();
   		}
		else
		{
			document.writeln('' + dateline1 + '');
			//document.write('' + dateline2 + '');
		} 
		document.write('' + dateline2 + '');
}

// standaard popupscript
function DaPopup(url,Dawidth,Daheight){
	var Dapopup
	Dapopup = window.open(url,'DaPopup','toolbar=no,menubar=no,scrollbars=yes,resizable=yes,width='+Dawidth+',height='+Daheight+',directories=no');
	Dapopup.focus();
}

function swapsheet(){
	css_UN = "/css/mt.css";
	css_NN = "/css/mt_nn.css";
	css_IE = "/css/mt_ie.css";

		if (isUnix())
		{
			document.write("<link rel='stylesheet' href='" + css_UN + "' type='text/css'>");
		}
		else
		{
			if(is_nav)
			{
				document.write("<link rel='stylesheet' href='" + css_NN + "' type='text/css'>");
			}
			else if(is_ie)
			{
				document.write("<link rel='stylesheet' href='" + css_IE + "' type='text/css'>");
			}
	}
}

//GET COOKIE

function getCookie(name) 
{
	var cookie = " " + document.cookie;
	var search = " " + name + "=";
	var setStr = null;
	var offset = 0;
	var end = 0;
	if (cookie.length > 0) 
	{
		offset = cookie.indexOf(search);
		if (offset != -1) 
		{
			offset += search.length;
			end = cookie.indexOf(";", offset)
			if (end == -1) 
			{
				end = cookie.length;
			}
			setStr = unescape(cookie.substring(offset, end));
		}
	}
	return(setStr);
	
}

function setpoll (itemid) 
{

	var currentpoll =  itemid;
	var expDays = 365; // number of days the cookie should last
	var expDate = new Date();
	expDate.setTime(expDate.getTime() +  (24 * 60 * 60 * 1000 * expDays)); 

	if ( (document.pollform.answer[0].checked != '' ) || (document.pollform.answer[1].checked != '' ) || (document.pollform.answer[2].checked != '' ) )
	{
		document.cookie = "itemid=" + currentpoll + 
		((expDate == null) ? "" : ("; expires=" + expDate.toGMTString()))  +  "; path=/";
	}

}