function SetCookie (name, value) 
{
    var coo=new Cookie(name);    
    var oldValue=coo.Load();
    if(oldValue==null)
        oldValue="";    
    var exp=new Date();
    exp.setFullYear(exp.getFullYear()+1);    
    var coo=new Cookie(name, value+oldValue, "/", exp.toGMTString());    
    coo.Save();
}