var min=10;
var standard=(readCookie('txtsize')==null)?12:readCookie('txtsize');
var max=22;
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 += 2;
      }
      p[i].style.fontSize = s+"px"
   }
   createCookie('txtsize',s);
   window.location.reload();
};

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 -= 2;
      }
      p[i].style.fontSize = s+"px"
   }
   createCookie('txtsize',s);
   window.location.reload();
};

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 deleteCookie(name) {
	var p = document.getElementsByTagName('p');
   	for(i=0;i<p.length;i++) {
        p[i].style.fontSize = 12+"px";
   }
    createCookie(name,"",-1);
	window.location.reload();
}

window.onload = setUserOptions;

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

}