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"
   }
   
    createCookie("cookieFontSize",s,7);
   
}
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"
   }
   
   createCookie("cookieFontSize",s,7);
}

function defaultFontSize() {
   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 = 12;
      }
      p[i].style.fontSize = s+"px"
   }
   
   createCookie("cookieFontSize",s,7);
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function fontSize() {
    var x = readCookie('cookieFontSize')
    if (x) {
       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 = readCookie("cookieFontSize");
          }
          if(s!=min) {
             s = readCookie("cookieFontSize");
          }
          p[i].style.fontSize = s+"px"
       }    
    }
}