var min=10;
var max=14;
function increaseFontSize() {
   var p = document.getElementsByTagName('p');
   var lineheight = document.getElementsByTagName('line-height');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
         var t = parseInt(p[i].style.lineHeight.replace("px",""));
      } else {
         var s = 12;
         var t = 17;
      }
      if(s!=max) {
         s += 1;
         t += 2;
      }
      p[i].style.fontSize = s+"px";
      p[i].style.lineHeight = t+"px";
   }
}
function decreaseFontSize() {
   var p = document.getElementsByTagName('p');
   var lineheight = document.getElementsByTagName('line-height');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
         var t = parseInt(p[i].style.lineHeight.replace("px",""));
      } else {
         var s = 12;
         var t = 18;
      }
      if(s!=min) {
         s -= 1;
         t -= 2;
      }
      p[i].style.fontSize = s+"px";
      p[i].style.lineHeight = t+"px";
   }   
}



function toggle(x) {
	if (document.getElementById('commentform').style.display == 'none') {
		document.getElementById('commentform').style.display = '';
	} else {
		document.getElementById('commentform').style.display = 'none';
	}
}