var backImage ="images/fonds/blank.gif,images/fonds/noir-bebe.gif".split(',');

var backImageDIV = "images/fonds/boite,images/fonds/bebe,images/fonds/terre,images/fonds/dauphin,images/fonds/plage,images/fonds/soleil,images/fonds/chat,images/fonds/ciel-etoile,images/fonds/coeur,images/fonds/couche-soleil,images/fonds/leopard,images/fonds/tournesol,images/fonds/tulipes,images/fonds/voiture".split(',');

//Using the following functions are from quirksmode. - START
function setCookie(name, value) {
	value = value.toString();
  var argv = setCookie.arguments;
  var argc = setCookie.arguments.length;
  var expires = (argc > 2) ? argv[2] : null;
  var path = (argc > 3) ? argv[3] : null;
  var domain = (argc > 4) ? argv[4] : null;
  var secure = (argc > 5) ? argv[5] : false;
  document.cookie = name + "=" + escape(value.replace(/ /g, "+")) + 
     ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
     ((path == null) ? "" : ("; path=" + path)) +  
     ((domain == null) ? "" : ("; domain=" + domain)) +    
     ((secure == true) ? "; secure" : "");
}

function getCookie(name) {
  var arg = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;
  while (i < clen) {
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg)
      return getCookieVal (j);
    i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0) break;
  }
  return null;
}
function getCookieVal(offset) {
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
    endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset, endstr)).replace(/\+/g, " ");
}

function delCookie(name) {
  exp = new Date();
  exp.setTime(exp.getTime() - (24*60*60*1000));
  var cval = getCookie(name);
  cval = (cval == null) ? "" : cval;
  document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}
//function from quirksmode. - END

var selectedBgImage, BgImageCookie = "selectedBgImage";
function changeBGImage(selectedBgImage)
{
	delCookie(BgImageCookie); //if a cookie exists remove it, not necessary but I prefer this.
	if (document.body)
	{
		document.body.background = backImage[selectedBgImage];
		var expDate = new Date();
		expDate.setMonth(expDate.getMonth()+1);
		setCookie(BgImageCookie, selectedBgImage, expDate);
	}
	return true;
}
if(selectedBgImage = getCookie(BgImageCookie))
{
	changeBGImage(selectedBgImage);
}



var selectedBgImageDIV, BgImageCookieDIV = "selectedBgImageDIV";
function changeBGImageDIV(selectedBgImageDIV)
{
	delCookie(BgImageCookieDIV); //if a cookie exists remove it, not necessary but I prefer this.
	if ( document.getElementById && document.getElementById('BGDIV') )
	{
var sh = screen.height;
var sw = screen.width;
var img = "_800_600";
if (sh>600) img = "_1024_768";
if (sh>768) img = "_1280_960";
if (sh>960 && sw>1280) img = "_1440_1080";
if (sh>1080 && sw<1920) img = "_1600_1200";
if (sw>1600) img = "_1920_1200";
		document.getElementById('BGDIV').style.backgroundImage = 'url(' + backImageDIV[selectedBgImageDIV] + img + '.jpg)';
		document.getElementById('BGDIV').style.backgroundRepeat = 'no-repeat';
		document.getElementById('BGDIV').style.backgroundPosition = '50% 0px';
		document.getElementById('BGDIV').style.backgroundAttachment = 'fixed';
		var expDateDIV = new Date();
		expDateDIV.setMonth(expDateDIV.getMonth()+1);
		setCookie(BgImageCookieDIV, selectedBgImageDIV, expDateDIV);
	}
	return true;
}
if(selectedBgImageDIV = getCookie(BgImageCookieDIV))
{
	changeBGImageDIV(selectedBgImageDIV);
}
else
{ 
changeBGImageDIV(0);
}