function SetCookie (name, value){
     
      //nouvel objet date
      var aujourdhui = new Date() ;
 
      //nouvel objet date
      var expdate = new Date() ;
 
      //1H
      expdate.setTime( aujourdhui.getTime() + ( 60*60*1000 ) )
 
      //creation du cookie
      document.cookie = name + "=" + value + ";expires=" + expdate.toGMTString() ;
}

function GetCookie (name){

    if(document.cookie.length==0) return "null";
    var regCookies=new RegExp("(; )","g");
    var cookies=document.cookie.split(regCookies);
    for (var i=0; i<cookies.length ; i++) {
      var regInfo=new RegExp("=","g");
      var infos= cookies[i].split(regInfo);
      if(infos[0]==name){
        return unescape(infos[1]);
      }
    }
    
    return "null";
  
}