var min=8;
var max=15;
var iDefault = 10
var iRememberSize = 10


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 = iDefault;
      }
      if(s!=max) {
         s += 1;
      }
      p[i].style.fontSize = s+"px"
	  iRememberSize = 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 = iDefault;
      }
      if(s!=min) {
         s -= 1;
      }
      p[i].style.fontSize = s+"px"
	  iRememberSize = s+"px"
   }   
}


function resetFontSize() {
   var p = document.getElementsByTagName('p');
   for(i=0;i<p.length;i++) {
       p[i].style.fontSize = iDefault + "px"
   }   
}



function loadFontSize(){
	var p = document.getElementsByTagName('p');
	for(i=0;i<p.length;i++) {
		p[i].style.fontSize = iRememberSize + "px"
	}  
}