function change_theme(num_theme)
{
	//Suppression du cookie
	cre_cook("pro_01","",-1);
	document.body.className=num_theme;
	setCook('pro_01',num_theme);
}

/*COOKIES*/
  function setCook(nom,valeur) {
        document.cookie = nom + "=" + escape(valeur)
        }

   function cre_cook(nom,contenu,jour) {
      var expireDate = new Date();
      expireDate.setTime(expireDate.getTime() + jour*24*3600*1000);
      document.cookie = nom + "=" + escape(contenu)
         + ";expires=" + expireDate.toGMTString();
      }
     
   function lit_cook(nom) {
      var deb,fin
      deb = document.cookie.indexOf(nom + "=")
      if (deb >= 0) {
         deb += nom.length + 1
         fin = document.cookie.indexOf(";",deb)
         if (fin < 0) fin = document.cookie.length
         return unescape(document.cookie.substring(deb,fin))
         }
      return ""
      }
     
   function tue_cook(nom) { cre_cook(nom,"",-1) }

function getCookie(nameCookie) {
var cookieTrouve=false;
var debut=0;
var fin=0;
var ch=document.cookie;
var i=0;
while (i<=ch.length) {
debut=i;
fin=debut+nameCookie.length;
if (ch.substring(debut,fin)==nameCookie) {
cookieTrouve=true;
break;
}
i++;
}
if (cookieTrouve) {
debut=fin+1;
fin=document.cookie.indexOf(";",debut);
if(fin<debut)
fin=document.cookie.length;
return document.cookie.substring(debut,fin);
}
return "";
}


function aleatoire(N) {
      return (Math.floor((N)*Math.random()+1));
   }

//Test existence cookie
if(getCookie('pro_01')=='')
{
	setCook('pro_01','theme'+aleatoire(nb_themes_total),1);
}

c=lit_cook('pro_01');
/*COOKIES EOF*/