function Get_Cookie(name) {
    var start = document.cookie.indexOf(name+"=");
    var len = start+("" + name).length+1;
    if ((!start) && (name != document.cookie.substring(0,name.length))) return null;
    if (start == -1) return null;
    var end = document.cookie.indexOf(";",len);
    if (end == -1) end = document.cookie.length;
    return unescape(document.cookie.substring(len,end));
}
 
function Set_Cookie(name,value) {
    document.cookie = name + "=" +escape(value);
}

  function InitCookie(name)  {
     Set_Cookie (name,"")    
}