function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

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;
}

function fsize(size,id)
	{
	var vfontsize = document.getElementById(id);
	if(vfontsize)
		{
		vfontsize.style.fontSize = size;	
		}
	}

window.onload = function(e) 
	{
	var cookie = readCookie("style");
	var title = cookie ? cookie : getPreferredStyleSheet();
	setActiveStyleSheet(title);
	}

window.onunload = function(e) 
	{
	var title = getActiveStyleSheet();
	createCookie("style", title, 365);
	}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);


window.onload = function(e) 
{
	(function()
	{
	$("#plus").fontscale("contenu","up",
		{
		unit:"px",increment:2, 
		useCookie:true, 
		adjustLeading:false,
		cookieName:fontscale,
		cookieParams:{expires:30,path:"/"}		 
		}
		);
		$("#moins").fontscale("contenu","down",{unit:"px",increment:2, useCookie:true, adjustLeading:false});
	});
	var cookie = readCookie("style");
	var title = cookie ? cookie : getPreferredStyleSheet();
	setActiveStyleSheet(title);
//font size cookie
	var cookie2 = readCookie("textsizestyle");
	var textsize = cookie2;
	fsize(textsize,'contenu');
}

window.onunload = function(e) 
	{
	var title = getActiveStyleSheet();
	var vfontsize = document.getElementById("contenu");	
	var textsize = vfontsize.style.fontSize;
	createCookie("style", title, 365);
	createCookie("textsizestyle", textsize, 365);
	}
	$(function()
		{
		/*nom de la balise sorte ou #id auquel mettre l'événement click*/
        $('input').click(function()
			{
            var ourText = $('#contenu');
            var currFontSize = ourText.css('fontSize');
            var finalNum = parseFloat(currFontSize, 15);
            var stringEnding = currFontSize.slice(-2);
			if(this.id == 'plus')
			/*maximum, minimum de grosseur de font et nombre à l'ajout ou retrait*/
				if (finalNum >36)
					{
					return false;
					}
				else
					{
					finalNum += 2;				
					}
            else if(this.id == 'moins') 
				{
				if (finalNum < 15)
					{
					return false;
					}
				else
					{
					finalNum -= 2;				
					}
				}		
            ourText.css('fontSize', finalNum + stringEnding);
			});
		});