var prefsLoaded = false;
var defualtFont = 8;
var currentFont = defualtFont;

function setFontSize(fontSize){
	document.body.style.fontSize = fontSize + 'pt';
	currentFont = fontSize
};


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 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;
};

window.onload = setUserOptions;

function setUserOptions(){
	if(!prefsLoaded){

		cookie = readCookie("fontSize");
		currentFont = cookie ? cookie : defualtFont;
		setFontSize(currentFont);

		prefsLoaded = true;
	}

}
window.onunload = saveSettings;

function saveSettings()
{
		if(currentFont == 78 || currentFont == 88 || currentFont == 68) {
			currentFont == 8
		}
		
  createCookie("fontSize", currentFont, 365);
}