function switchimage(newimg, oldimg) {
	var img = document.getElementById(oldimg);
	img.setAttribute('src', 'assets/images/' + newimg);
}

function setimage(src, caption)
{
	document.getElementById('mainpic').src = src;
	if(caption != ""){document.getElementById('mainpiccap').setAttribute("class","greybox");}
	else{document.getElementById('mainpiccap').removeAttribute("class");}
	document.getElementById('mainpiccap').innerHTML = caption;
}

var min=10;
var max=18;
function increaseFontSize(divname) {
   var p = document.getElementById(divname);
   
      if(p.style.fontSize) {
         var s = parseInt(p.style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=max) {
         s += 1;
      }
      p.style.fontSize = s+"px"
   
}
function decreaseFontSize(divname) {
   var p = document.getElementById(divname);
      if(p.style.fontSize) {
         var s = parseInt(p.style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=min) {
         s -= 1;
      }
      p.style.fontSize = s+"px"
   
}