//=====================================
// SCRIPTS
// Scripts utilisés sur la totalité du site
//=====================================


//-----------------------------------------------
// STYLE SWITCHER
// Script écrit par Paul Sowden:
// http://idontsmoke.co.uk/
// dans l'article Alternative Style : Working With Alternate Style Sheets:
// http://www.alistapart.com/articles/alternate/
//-----------------------------------------------

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()+(10*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("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);

// -----------------------------------------------
// IMAGE GALLERY
// Cette fonction a été écrite par Jeremy Keith:
// http://adactio.com/
// dans l'article Javascript Image Gallery:
// http://www.alistapart.com/articles/imagegallery/
// -----------------------------------------------

function showPic (whichpic) {
	if (document.getElementById) {
		document.getElementById('placeholder') .src = whichpic.href;
		if (whichpic.title) {
			document.getElementById('photo-legende') .childNodes[0].nodeValue = whichpic.title;
		} else {
			document.getElementById('photo-legende') .childNodes[0].nodeValue = whichpic.childNodes[0].nodeValue;
		}
 		return false;
	} else {
		return true;
	}
}

// --------------------------------------------------
// Propagande
// --------------------------------------------------

function Propagande () {
	var IndexPropagande=new Array();
	IndexPropagande[0] = '<a href="http://www.mozilla.org/products/thunderbird/" title="Essayez le client mail Thunderbird"><img src="images/boutons/thunderbird.png" alt="Get Thunderbird" width="80px" height="15px" /></a>'
	IndexPropagande[1] = '<a href="http://browsehappy.com/" title=""><img src="images/boutons/browsehappy.gif" alt="Browse happy" width="80px" height="15px" /></a>'
	IndexPropagande[2] = '<a href="http://www.spreadfirefox.com//?q=affiliates&amp;id=0&amp;t=85" title="Essayez le navigateur web Firefox"><img src="images/boutons/firefox.png" alt="Get Firefox" width="80px" height="15px" /></a>'
	IndexPropagandeNb = Math.round(Math.random() * (IndexPropagande.length-1));
	document.write('<p id="propagande">'+IndexPropagande[IndexPropagandeNb]+'</p>');

}