function setActiveStyleSheet(title) {
	switch (title)
	{
		case "cookie" :
		var cookie = readCookie("veziaux-style");
  		title = cookie ? cookie : getPreferredStyleSheet();
		break;
		case "grand" :
		title=getActiveStyleSheet();
		title=parseInt(title);
		if (eval(title<21)) // si la feuille de style n'est pas à 21
		{ title+=2; } // on augmente la police
		else
		{ title=21; } // sinon, on laisse à 21
  		createCookie("veziaux-style", title, 365);
		break;
		case "petit" :
		title=getActiveStyleSheet();
		title=parseInt(title);
		if (eval(title>11))
		{ title-=2; }
		else
		{ title=11;	 }
  		createCookie("veziaux-style", title, 365);
		break;
		default :
		title=11;
		break;		
	}
	
  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;*/
  createCookie("veziaux-style", 11, 365);
  return 11;
}
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 = function(e) {
  var cookie = readCookie("veziaux-style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet("cookie");
}
/*window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("veziaux-style", title, 365);
}*/
var cookie = readCookie("veziaux-style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);