// JavaScript Document

function set_cookie_year ( name, value )
{
    var current_date = new Date;
    var cookie_year = current_date.getFullYear() + 1;
    var cookie_month = current_date.getMonth();
    var cookie_day = current_date.getDate();
    set_cookie ( name, value, cookie_year, cookie_month, cookie_day );
}

function set_cookie ( name, value, exp_y, exp_m, exp_d, path, domain, secure )
{
  var cookie_string = name + "=" + escape ( value );

  if ( exp_y )
  {
     var expires = new Date ( exp_y, exp_m, exp_d );
     cookie_string += "; expires=" + expires.toGMTString();
  }

  if ( path )
       cookie_string += "; path=" + escape ( path );

  if ( domain )
       cookie_string += "; domain=" + escape ( domain );
  
  if ( secure )
       cookie_string += "; secure";
  
  document.cookie = cookie_string;
}

function get_cookie ( cookie_name )
{
   var results = document.cookie.match(cookie_name + '=(.*?)(;|$)');

   if(results)
      return unescape(results[1]);
   else
      return null;
}

function delete_cookie ( cookie_name )
{
   var cookie_date = new Date ( );  // current date & time
   cookie_date.setTime( cookie_date.getTime() - 1 );
   document.cookie = cookie_name += "=; expires=" + cookie_date.toGMTString();
}