function disableRightClick(e)
{
  var message = "Right click disabled";
  
  if(!document.rightClickDisabled) // initialize
  {
    if(document.layers) 
    {
      document.captureEvents(Event.MOUSEDOWN);
      document.onmousedown = disableRightClick;
    }
    else document.oncontextmenu = disableRightClick;
    return document.rightClickDisabled = true;
  }
  if(document.layers || (document.getElementById && !document.all))
  {
    if (e.which==2||e.which==3)
    {
//      alert(message);
      return false;
    }
  }
  else
  {
//    alert(message);
    return false;
  }
}
disableRightClick();


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) { //v4.01
  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_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];}
}

function MM_goToURL() { //v3.0
  var i, args=MM_goToURL.arguments; document.MM_returnValue = false;
  for (i=0; i<(args.length-1); i+=2) eval(args[i]+".location='"+args[i+1]+"'");
}

function MM_openBrWindow(theURL,winname,features) { //v2.0
  window.open(theURL,winname,features);
}

function MM_popupMsg(msg) { //v1.0
  alert(msg);
}


function MM_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
    if (val) { nm=val.name; if ((val=val.value)!="") {
      if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
        if (p<1 || p==(val.length-1)) errors+='- '+nm+' moet een e-mailadres bevatten.\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' moet een getal bevatten.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' moet een getal zijn tussen '+min+' en '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is vereist.\n'; }
  }

  if (errors) alert('Gelieve de volgende zaken te verbeteren:\n'+errors);
  document.MM_returnValue = (errors == '');
}

function resizeMe(){

if (navigator.appName == 'Netscape'){
adjWidth = document.images[0].width + 6;
adjHeight = document.images[0].height + 27;
}

else {
adjWidth = document.images[0].width + 10;
adjHeight = document.images[0].height + 30;
}

window.resizeTo(adjWidth, adjHeight);
window.moveTo(screen.width/2-(document.images[0].width/2),screen.height/2-((document.images[0].height/2)+100));
window.focus()
}

function totaal() 
{


	prijs = 0;
	
	for(i=1;i < 27;i++){ 
		subt = eval("document.form.b" + i);
		subc = eval("document.form.c" + i);
		subp = eval("document.form.t" + i);
		
		if ((document.form.typex[1].checked == true) && (document.form.vs14.checked == true) && (i == 14)) 
		{
			var count = 0; 	
			for(o=1;o < 27;o++)
			{ 
				temp = eval("document.form.vs" + o);
				if(temp.checked == true)
				{ 
					count++; 
				} 
			} 
			if (count > 3) { prijs = prijs; } else { prijs = prijs + parseInt(subc.value) * parseInt(subp.value); }
		}
		else if (document.form.typex[0].checked == true)
		{
			prijs = prijs + parseInt(subt.value) * parseInt(subp.value);
		} else {
			prijs = prijs + parseInt(subc.value) * parseInt(subp.value);
		}
	}
	
	
	if (document.form.typex[0].checked == true)
	{
		document.form.prijs.value = prijs;	
	}
	else
	{	
		document.form.prijs.value = prijs * parseInt(document.form.atl.value);	
	}
}

function clearit() 
{
	for(i=1;i < 27;i++){ 
		temp = eval("document.form.vs" + i);
		temp.checked = false; 
		
		temp2 = eval("document.form.t" + i);
		temp2.value = "0"; 
		temp2.style.backgroundColor = "#DCEFAF";
		temp2.disabled = true; 

	}

	document.form.atl.value = "1"; 
	document.form.atl.style.backgroundColor = "#DCEFAF";

	totaal() 
}	

function checkit(nr) {
	
	vakske = eval("document.form.t" + nr);
	check = eval("document.form.vs" + nr);

	if (eval("document.form.vs" + nr + ".checked") == true) 
	{ 
			if (document.form.typex[1].checked == true)
			{
				vakske.value = "1";
				vakske.disabled = true;
				vakske.style.backgroundColor = "#FFFFFF";
			}
			else
			{
				vakske.value = "1";
				vakske.disabled = false;
				vakske.style.backgroundColor = "#FFFFFF";
			}

	} 
	else 
	{ 
		vakske.value = "0";
		vakske.disabled = true;
		vakske.style.backgroundColor = "#DCEFAF";
	}

totaal()
}


function checkit3() {
	
	// wanneer er op totaal wordt geklikt checken of er niet TE WEINIG voorstellingen zijn aangeduid
	
		if (document.form.typex[1].checked == true)
		{

			var count = 0; 
			
			for(i=1;i < 27;i++)
			{ 
				temp = eval("document.form.vs" + i);
				if(temp.checked == true)
				{ 
					count++; 
				} 
			} 


			if (count < 3) 
			{
				alert('U hebt te weinig voorstellingen aangeduid. De Abo-prijs geldt vanaf 3 betalende voorstellingen. Selecteer meer voorstellingen of kies losse tickets.'); 
  				count++;
  				document.MM_returnValue = (count == '');				
				return document.MM_returnValue;	
  			}
			else { 
				totaal();
				MM_validateForm('naam','','R','voornaam','','R','straat','','R','nummer','','R','postcode','','R','gemeente','','R','email','','RisEmail');
				return document.MM_returnValue;	
			}
		}
		else
		{
				totaal();
				MM_validateForm('naam','','R','voornaam','','R','straat','','R','nummer','','R','postcode','','R','gemeente','','R','email','','RisEmail');
				return document.MM_returnValue;	

		}
}

function checkit4() {
	
			var count = 0; 
			
			for(i=1;i < 33;i++){ 
				temp = eval("document.form.vo" + i);
				if(temp.checked == true){ 
					count++; 
				} 
			} 

			  if (count < 1) 
			  {
			  	count = 14;
			  	alert('U dient een cursus te selecteren.');
  				event.returnValue=false;				
				MM_validateForm('naam','','R','voornaam','','R','straat','','R','nummer','','R','postcode','','R','gemeente','','R','email','','RisEmail');
			  	return document.MM_returnValue;	
			  }
			  else
			  {
				MM_validateForm('naam','','R','voornaam','','R','straat','','R','nummer','','R','postcode','','R','gemeente','','R','email','','RisEmail');
			  	return document.MM_returnValue;	
			  }
totaal();
}


function bolleke()
{
	if (document.form.typex[0].checked == true)
	{
		document.form.atl.disabled = true;
	}
	else if (document.form.typex[1].checked == true)
	{
		document.form.atl.disabled = false;
	} 
	clearit();
	uitverkocht();
}