var min=8;
var max=18;
function increaseFontSize() {
   var p = document.getElementsByTagName('p');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=max) {
         s += 1;
      }
      p[i].style.fontSize = s+"px"
   };
   var c = document.getElementById('canvas');
   p = c.getElementsByTagName('ul');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=max) {
         s += 1;
      }
      p[i].style.fontSize = s+"px"
   }
}
function decreaseFontSize() {
   var p = document.getElementsByTagName('p');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=min) {
         s -= 1;
      }
      p[i].style.fontSize = s+"px"
   };
   var c = document.getElementById('canvas');
   p = c.getElementsByTagName('ul');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=min) {
         s -= 1;
      }
      p[i].style.fontSize = s+"px"
   } 
}


function resizeZoekFrame() {
  var the_height = document.getElementById('zoekframe').contentWindow.document.body.scrollHeight;
  document.getElementById('zoekframe').style.height = the_height + 20 + 'px';
}

function resizeWijkInfoFrame(frameName) {
  var the_heigth = document.getElementById(frameName).contentWindow.document.body.scrollHeight;
  document.getElementById(frameName).style.height = the_heigth + 20 + 'px';
}

function newsLoadFirstImage() {
	// kopieer de titel in het fotoframe
	var list = document.getElementById('news-list-container');
	var items = list.getElementsByTagName('div');
	var first = items[0];
	var titel = first.getElementsByTagName('h3')[0];
	var frame = document.getElementById('news-photo-frame');
	frame.innerHTML = titel.innerHTML;

	// kopieer de foto in het frame
	var container = document.getElementById('news-photo-container');
	var image = first.getElementsByTagName('img')[0];
	container.style.background = 'url(' + image.src + ')';
}

function newsLoadImage(newsid) {
	// kopieer de titel in het fotoframe
	var frame = document.getElementById('news-photo-frame');
	var newsitem = document.getElementById(newsid);
	var titel = newsitem.getElementsByTagName('h3')[0];
	frame.innerHTML = titel.innerHTML;

	// kopieer de foto in het frame
	var container = document.getElementById('news-photo-container');
	var image = newsitem.getElementsByTagName('img')[0];
	container.style.background = 'url(' + image.src + ')';
}