function zetCSS(welkeCSS) {
  document.write('<link href="http://www.'+welkeCSS+'.nl/shared/css/balk/'+welkeCSS+'/balk.css" rel="stylesheet" type="text/css">');
  document.write('<!--[if lt IE 7]>');
  document.write('<link rel="stylesheet" href="http://www.'+welkeCSS+'.nl/shared/css/balk/'+welkeCSS+'/balk_ie.css" type="text/css" media="screen" />');
  document.write('<![endif]-->');
  document.write('<!--[if IE 7]>');
  document.write('<link rel="stylesheet" href="http://www.'+welkeCSS+'.nl/shared/css/balk/'+welkeCSS+'/balk_ie7.css" type="text/css" media="screen" />');
  document.write('<![endif]-->');
}

function poMenu() {
  document.write('<script type="text/javascript" src="http://assets.cn.omroep.nl/javascripts/npo-explore.js"></script>');
  document.write('<div class="balkonderdeel npo"><div id="npo_button_container" class="npo_button_lol" ><a href="http://www.omroep.nl/">Ontdek Omroep.nl</a></div></div>');
}

function poMenuZappelin() {
  document.write('<div class="balkonderdeel npo zappelin"><div id="zappelin_button_container" class="zappelin_button_lol" ><a href="javascript:window.open(\'http://www.zappelin.nl/\', \'Zappelin\');"><span>Ontdek Zappelin.nl</span></a></div></div>');
}

function poMenuZapp() {
  document.write('<script type="text/javascript" src="http://balk.omroep.nl/js/zapp-balk.js"></script>');
  document.write('<div class="balkonderdeel npo zapp"><div id="zapp_button_container" class="zapp_button_lol" ><a href="http://www.zapp.nl/">Ontdek Zapp.nl</a></div></div>');
}

function startBalk() {
  document.write('<div id="balk">');
  document.write('<div id="logo_container">');
}

function endBalk () {
   document.write('</div>');
   document.write('</div>');
}

function startLogo() {
  document.write('<div id="logo_merk">');
}

function logo(id,url,name) {
  document.write('<a href="'+url+'"><span>'+name+'</span></a>');
}

function endLogo() {
  document.write('</div>');
}

function balkSchooltv() {
  zetCSS('schooltv');
  startBalk();
  startLogo();
  logo('schooltv','http://www.schooltv.nl','Schooltv');
  endLogo();
  poMenu();
  endBalk();  
}

function balkSchooltvZapp() {
  zetCSS('schooltv');
  startBalk();
  startLogo();
  logo('schooltv','http://www.schooltv.nl','Schooltv');
  endLogo();
  poMenuZapp();
  endBalk();  
}

function balkSchooltvZappelin() {
  zetCSS('schooltv');
  startBalk();
  startLogo();
  logo('schooltv','http://www.schooltv.nl','Schooltv');
  endLogo();
  poMenuZappelin();
  endBalk();  
}

function balkPeutertv() {
  zetCSS('peutertv');
  startBalk();
  startLogo();
  logo('peutertv','http://www.peutertv.nl','Peutertv');
  endLogo();
  poMenu();
  endBalk();  
}

function balkPeutertvZappelin() {
  zetCSS('peutertv');
  startBalk();
  startLogo();
  logo('peutertv','http://www.peutertv.nl','Peutertv');
  endLogo();
  poMenuZappelin();
  endBalk();  
}

function balkTeleac() {
  zetCSS('teleac');
  startBalk();
  startLogo();
  logo('teleac','http://www.teleac.nl','Teleac');
  endLogo();
  poMenu();
  endBalk();  
}

function balkTeleacZapp() {
  zetCSS('teleac');
  startBalk();
  startLogo();
  logo('teleac','http://www.teleac.nl','Teleac');
  endLogo();
  poMenuZapp();
  endBalk();  
}

function maakBalk(soortBalk) {	// Maak de balk:

	switch (soortBalk) {
		case 'none':
      break;

		case 'schooltv':
		case 'balk_schooltv':
      balkSchooltv();
      break;

		case 'schooltv_zappelin':
		case 'balk_schooltv_zappelin':
      balkSchooltvZappelin();
      break;

		case 'schooltv_zapp':
		case 'balk_schooltv_zapp':
      balkSchooltvZapp();
      break;

		case 'peutertv':
		case 'balk_peutertv':
      balkPeutertv();
      break;

		case 'peutertv_zappelin':
		case 'balk_peutertv_zappelin':
      balkPeutertvZappelin();
      break;

		case 'teleac_zapp':
		case 'balk_teleac_zapp':
      balkTeleacZapp();
      break;

		case 'balk_teleac':
		default:
      balkTeleac();
      break;
	}

}