function getCookie( 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 setCookie( name, value, expires, path, domain, secure ) {
   var today = new Date();
   today.setTime( today.getTime() );
   if ( expires ) {
      expires = expires * 1000 * 60 * 60 * 24;
   }
   var expires_date = new Date( today.getTime() + (expires) );
   document.cookie = name+"="+escape( value ) +
      ( ( expires ) ? ";expires="+expires_date.toGMTString() : "" ) + //expires.toGMTString()
      ( ( path ) ? ";path=" + path : "" ) +
      ( ( domain ) ? ";domain=" + domain : "" ) +
      ( ( secure ) ? ";secure" : "" );
}

function deleteCookie( name, path, domain ) {
   if ( getCookie( name ) ) document.cookie = name + "=" +
         ( ( path ) ? ";path=" + path : "") +
         ( ( domain ) ? ";domain=" + domain : "" ) +
         ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}