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, 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() : "" ) + 
    ( ( path ) ? ";path=" + path : "" ) + 
    ( ( domain ) ? ";domain=" + domain : "" ) +
    ( ( secure ) ? ";secure" : "" );
}

function hide_notice(id) {
    document.getElementById('topnotice'+id).style.display = 'none';
    Set_Cookie ( 'notice'+id, 'true', '30', '/', '', '');
}