$(document).ready(function(){
  $('.lightbox').lightBox();

  
  parseBackground();

});

function parseBackground(){
  var viewportheight;
  if (typeof window.innerHeight != 'undefined'){
    viewportheight = window.innerHeight;
  }else if (typeof document.documentElement != 'undefined'&& typeof document.documentElement.clientHeight !='undefined' && document.documentElement.clientHeight != 0){
    viewportheight = document.documentElement.clientHeight;
  }else{
    viewportheight = document.getElementsByTagName('body')[0].clientHeight;
  }
  // 815 is afbeelding
  if(viewportheight-160 < 620){
    $('body').css('background-position','center 160px');
  }else{
    $('body').css('background-position','bottom');
  }
}