// JavaScript Document

var min=10;
var max=18;
function increaseFontSize() {
   var p = document.getElementById('article');
      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() {
   var p = document.getElementById('article');
      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"  
}