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(name)
{
	cookie_name = name + "=";
	cookie_length = document.cookie.length;
	cookie_begin = 0;
	while (cookie_begin < cookie_length)
	{
		value_begin = cookie_begin + cookie_name.length;
		if (document.cookie.substring(cookie_begin, value_begin) == cookie_name)
		{
			var value_end = document.cookie.indexOf (";", value_begin);
			if (value_end == -1)
			{
				value_end = cookie_length;
			}
			return unescape(document.cookie.substring(value_begin, value_end));
		}
		cookie_begin = document.cookie.indexOf(" ", cookie_begin) + 1;
		if (cookie_begin == 0)
		{
			break;
		}
	}
	return null;
}