var prefsLoaded = false;
var defaultFontSize = 90; // +15 par rapport au défaut
var currentFontSize = defaultFontSize;

function revertStyles(){
	currentFontSize = defaultFontSize;
	changeFontSize(0);
}

function changeFontSize(sizeDifference){
	currentFontSize = parseInt(currentFontSize) + parseInt(sizeDifference * 5);
	if(currentFontSize > 105){
		currentFontSize = 105;
	}else if(currentFontSize < 60){
		currentFontSize = 60;
	}
setFontSize(currentFontSize);
};

function setFontSize(fontSize){
	document.body.style.fontSize = fontSize + '%';
	//alert (document.body.style.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;
//window.onload = revertStyles();


function setUserOptions(){

	if(!prefsLoaded){



		cookie = readCookie("fontSize");

		currentFontSize = cookie ? cookie : defaultFontSize;

		setFontSize(currentFontSize);

		

		prefsLoaded = true;

	}



}



window.onunload = saveSettings;



function saveSettings()

{

  createCookie("fontSize", currentFontSize, 365);

}