function NavRollOutHoofd(oTd)  { oTd.className = "nav-hoofd";  }
function NavRollOverHoofd(oTd)  { oTd.className = "nav-hoofd-over";  }
function NavRollOutFooter(oTd)  { oTd.className = "nav-footer";  }
function NavRollOverFooter(oTd)  { oTd.className = "nav-footer-over";  }
function GoPage(page) {top.location=page;}

function pop(mypage,w,h) {
  var winl = Math.floor((screen.width-w)/2);
  var wint = Math.floor((screen.height-h)/2)-10;
  var settings  ='height='+h+',';
      settings +='width='+w+',';
      settings +='top='+wint+',';
      settings +='left='+winl+',';
      settings +='scrollbars=auto,';
      settings +='resizable=no';
  win=window.open(mypage,'zelfzorg_popup',settings);
  win.window.focus();
}

function checkboxIsOn(theCheckbox) {
  var isBox = false;
  for( var x = 0; x < theCheckbox.attributes.length; x++ ) {
  	if( theCheckbox.attributes[x].nodeName.toLowerCase() == 'type' && theCheckbox.attributes[x].nodeValue.toLowerCase() == 'checkbox') {
  	  isBox = true;
  	}
  }
  return(isBox && theCheckbox.checked);
}

function countActiveCheckBoxes(elm) {
  // 2006-01-10 added array shit for confused IE
  var listing = new Array();
  for(var x = 0; x < elm.childNodes.length; x++ ) {
    if(elm.childNodes[x].nodeName.toLowerCase() == 'input') {
      if(checkboxIsOn(elm.childNodes[x])) {
        listing = listing.concat(elm.childNodes[x].name);
      }
    }
    if(elm.childNodes[x].childNodes.length) {
      var sub = countActiveCheckBoxes(elm.childNodes[x]);
      if(sub.length > 0) 
        listing = listing.concat(sub);
    }
  }
  return(arrayUnique(listing));
}

function checkCompBox(checkbox, formid) {
  var form = document.getElementById(formid);

  if(!checkbox.checked) return(true);

  // check if 2-5 items are selected, alert if not
  var count = countActiveCheckBoxes(form).length;
  if(count < 3) {
    return(true);
  } else {
    //alert('U kunt maximaal vijf producten vergelijken');
    alert('U kunt maximaal twee producten vergelijken')
    checkbox.checked = false;
    return(false);
  }
}

function submitcomp(formid) {
  var form = document.getElementById(formid);

  // check if 2-5 items are selected, alert if not
  var count = countActiveCheckBoxes(form).length;
  
  if(count > 1 && count < 6) {
    form.submit();
  } else {
    //alert('Vink tussen de twee en vijf producten aan om te vergelijken');
    alert('Vink twee producten aan om te vergelijken');
  }
}

function showHideList(listid, block) {
  var elm = document.getElementById(listid);
  if(block) {
    elm.style.display = 'block';
  } else {
    elm.style.display = 'none';
  }
}


// VIRTUEEL LICHAAM
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];}
}


/**
 * Removes duplicates in the array 'a'
 * @author Johan K�nng�rd, http://dev.kanngard.net
 */
function arrayUnique(a) {
	tmp = new Array();
	for(i=0;i<a.length;i++){
		if(!contains(tmp, a[i])) {
			tmp = tmp.concat(a[i]);
		}
	}
	return tmp;
}
function contains(a, e) {
	for(j=0;j<a.length;j++)if(a[j]==e)return true;
	return false;
}